1ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robotimport unittest 2ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robotfrom test import test_support 3ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robotfrom itertools import * 4ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robotfrom weakref import proxy 5ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robotfrom decimal import Decimal 6ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robotfrom fractions import Fraction 7ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robotimport sys 8ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robotimport operator 9ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robotimport random 10ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robotimport copy 11ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robotimport pickle 12ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robotfrom functools import reduce 13ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robotmaxsize = test_support.MAX_Py_ssize_t 14ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robotminsize = -maxsize-1 15ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 16ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robotdef onearg(x): 17ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 'Test function of one argument' 18ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot return 2*x 19ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 20ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robotdef errfunc(*args): 21ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 'Test function that raises an error' 22ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot raise ValueError 23ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 24ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robotdef gen3(): 25ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 'Non-restartable source sequence' 26ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot for i in (0, 1, 2): 27ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot yield i 28ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 29ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robotdef isEven(x): 30ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 'Test predicate' 31ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot return x%2==0 32ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 33ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robotdef isOdd(x): 34ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 'Test predicate' 35ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot return x%2==1 36ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 37ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robotclass StopNow: 38ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 'Class emulating an empty iterable.' 39ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot def __iter__(self): 40ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot return self 41ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot def next(self): 42ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot raise StopIteration 43ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 44ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robotdef take(n, seq): 45ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 'Convenience function for partially consuming a long of infinite iterable' 46ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot return list(islice(seq, n)) 47ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 48ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robotdef prod(iterable): 49ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot return reduce(operator.mul, iterable, 1) 50ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 51ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robotdef fact(n): 52ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 'Factorial' 53ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot return prod(range(1, n+1)) 54ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 55ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robotclass TestBasicOps(unittest.TestCase): 56ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot def test_chain(self): 57ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 58ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot def chain2(*iterables): 59ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 'Pure python version in the docs' 60ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot for it in iterables: 61ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot for element in it: 62ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot yield element 63ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 64ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot for c in (chain, chain2): 65ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(list(c('abc', 'def')), list('abcdef')) 66ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(list(c('abc')), list('abc')) 67ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(list(c('')), []) 68ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(take(4, c('abc', 'def')), list('abcd')) 69ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(TypeError, list,c(2, 3)) 70ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 71ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot def test_chain_from_iterable(self): 72ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(list(chain.from_iterable(['abc', 'def'])), list('abcdef')) 73ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(list(chain.from_iterable(['abc'])), list('abc')) 74ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(list(chain.from_iterable([''])), []) 75ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(take(4, chain.from_iterable(['abc', 'def'])), list('abcd')) 76ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(TypeError, list, chain.from_iterable([2, 3])) 77ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 78ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot def test_combinations(self): 79ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(TypeError, combinations, 'abc') # missing r argument 80ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(TypeError, combinations, 'abc', 2, 1) # too many arguments 81ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(TypeError, combinations, None) # pool is not iterable 82ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(ValueError, combinations, 'abc', -2) # r is negative 83ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(list(combinations('abc', 32)), []) # r > n 84ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(list(combinations(range(4), 3)), 85ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot [(0,1,2), (0,1,3), (0,2,3), (1,2,3)]) 86ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 87ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot def combinations1(iterable, r): 88ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 'Pure python version shown in the docs' 89ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot pool = tuple(iterable) 90ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot n = len(pool) 91ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot if r > n: 92ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot return 93ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot indices = range(r) 94ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot yield tuple(pool[i] for i in indices) 95ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot while 1: 96ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot for i in reversed(range(r)): 97ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot if indices[i] != i + n - r: 98ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot break 99ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot else: 100ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot return 101ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot indices[i] += 1 102ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot for j in range(i+1, r): 103ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot indices[j] = indices[j-1] + 1 104ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot yield tuple(pool[i] for i in indices) 105ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 106ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot def combinations2(iterable, r): 107ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 'Pure python version shown in the docs' 108ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot pool = tuple(iterable) 109ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot n = len(pool) 110ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot for indices in permutations(range(n), r): 111ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot if sorted(indices) == list(indices): 112ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot yield tuple(pool[i] for i in indices) 113ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 114ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot def combinations3(iterable, r): 115ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 'Pure python version from cwr()' 116ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot pool = tuple(iterable) 117ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot n = len(pool) 118ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot for indices in combinations_with_replacement(range(n), r): 119ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot if len(set(indices)) == r: 120ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot yield tuple(pool[i] for i in indices) 121ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 122ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot for n in range(7): 123ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot values = [5*x-12 for x in range(n)] 124ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot for r in range(n+2): 125ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot result = list(combinations(values, r)) 126ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(len(result), 0 if r>n else fact(n) // fact(r) // fact(n-r)) # right number of combs 127ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(len(result), len(set(result))) # no repeats 128ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(result, sorted(result)) # lexicographic order 129ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot for c in result: 130ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(len(c), r) # r-length combinations 131ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(len(set(c)), r) # no duplicate elements 132ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(list(c), sorted(c)) # keep original ordering 133ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertTrue(all(e in values for e in c)) # elements taken from input iterable 134ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(list(c), 135ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot [e for e in values if e in c]) # comb is a subsequence of the input iterable 136ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(result, list(combinations1(values, r))) # matches first pure python version 137ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(result, list(combinations2(values, r))) # matches second pure python version 138ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(result, list(combinations3(values, r))) # matches second pure python version 139ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 140ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot @test_support.impl_detail("tuple reuse is specific to CPython") 141ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot def test_combinations_tuple_reuse(self): 142ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(len(set(map(id, combinations('abcde', 3)))), 1) 143ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertNotEqual(len(set(map(id, list(combinations('abcde', 3))))), 1) 144ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 145ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot def test_combinations_with_replacement(self): 146ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot cwr = combinations_with_replacement 147ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(TypeError, cwr, 'abc') # missing r argument 148ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(TypeError, cwr, 'abc', 2, 1) # too many arguments 149ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(TypeError, cwr, None) # pool is not iterable 150ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(ValueError, cwr, 'abc', -2) # r is negative 151ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(list(cwr('ABC', 2)), 152ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot [('A','A'), ('A','B'), ('A','C'), ('B','B'), ('B','C'), ('C','C')]) 153ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 154ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot def cwr1(iterable, r): 155ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 'Pure python version shown in the docs' 156ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot # number items returned: (n+r-1)! / r! / (n-1)! when n>0 157ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot pool = tuple(iterable) 158ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot n = len(pool) 159ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot if not n and r: 160ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot return 161ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot indices = [0] * r 162ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot yield tuple(pool[i] for i in indices) 163ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot while 1: 164ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot for i in reversed(range(r)): 165ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot if indices[i] != n - 1: 166ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot break 167ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot else: 168ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot return 169ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot indices[i:] = [indices[i] + 1] * (r - i) 170ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot yield tuple(pool[i] for i in indices) 171ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 172ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot def cwr2(iterable, r): 173ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 'Pure python version shown in the docs' 174ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot pool = tuple(iterable) 175ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot n = len(pool) 176ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot for indices in product(range(n), repeat=r): 177ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot if sorted(indices) == list(indices): 178ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot yield tuple(pool[i] for i in indices) 179ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 180ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot def numcombs(n, r): 181ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot if not n: 182ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot return 0 if r else 1 183ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot return fact(n+r-1) // fact(r) // fact(n-1) 184ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 185ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot for n in range(7): 186ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot values = [5*x-12 for x in range(n)] 187ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot for r in range(n+2): 188ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot result = list(cwr(values, r)) 189ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 190ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(len(result), numcombs(n, r)) # right number of combs 191ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(len(result), len(set(result))) # no repeats 192ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(result, sorted(result)) # lexicographic order 193ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 194ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot regular_combs = list(combinations(values, r)) # compare to combs without replacement 195ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot if n == 0 or r <= 1: 196ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(result, regular_combs) # cases that should be identical 197ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot else: 198ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertTrue(set(result) >= set(regular_combs)) # rest should be supersets of regular combs 199ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 200ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot for c in result: 201ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(len(c), r) # r-length combinations 202ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot noruns = [k for k,v in groupby(c)] # combo without consecutive repeats 203ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(len(noruns), len(set(noruns))) # no repeats other than consecutive 204ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(list(c), sorted(c)) # keep original ordering 205ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertTrue(all(e in values for e in c)) # elements taken from input iterable 206ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(noruns, 207ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot [e for e in values if e in c]) # comb is a subsequence of the input iterable 208ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(result, list(cwr1(values, r))) # matches first pure python version 209ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(result, list(cwr2(values, r))) # matches second pure python version 210ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 211ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot @test_support.impl_detail("tuple reuse is specific to CPython") 212ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot def test_combinations_with_replacement_tuple_reuse(self): 213ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot cwr = combinations_with_replacement 214ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(len(set(map(id, cwr('abcde', 3)))), 1) 215ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertNotEqual(len(set(map(id, list(cwr('abcde', 3))))), 1) 216ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 217ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot def test_permutations(self): 218ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(TypeError, permutations) # too few arguments 219ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(TypeError, permutations, 'abc', 2, 1) # too many arguments 220ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(TypeError, permutations, None) # pool is not iterable 221ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(ValueError, permutations, 'abc', -2) # r is negative 222ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(list(permutations('abc', 32)), []) # r > n 223ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(TypeError, permutations, 'abc', 's') # r is not an int or None 224ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(list(permutations(range(3), 2)), 225ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot [(0,1), (0,2), (1,0), (1,2), (2,0), (2,1)]) 226ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 227ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot def permutations1(iterable, r=None): 228ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 'Pure python version shown in the docs' 229ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot pool = tuple(iterable) 230ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot n = len(pool) 231ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot r = n if r is None else r 232ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot if r > n: 233ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot return 234ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot indices = range(n) 235ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot cycles = range(n, n-r, -1) 236ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot yield tuple(pool[i] for i in indices[:r]) 237ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot while n: 238ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot for i in reversed(range(r)): 239ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot cycles[i] -= 1 240ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot if cycles[i] == 0: 241ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot indices[i:] = indices[i+1:] + indices[i:i+1] 242ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot cycles[i] = n - i 243ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot else: 244ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot j = cycles[i] 245ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot indices[i], indices[-j] = indices[-j], indices[i] 246ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot yield tuple(pool[i] for i in indices[:r]) 247ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot break 248ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot else: 249ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot return 250ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 251ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot def permutations2(iterable, r=None): 252ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 'Pure python version shown in the docs' 253ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot pool = tuple(iterable) 254ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot n = len(pool) 255ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot r = n if r is None else r 256ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot for indices in product(range(n), repeat=r): 257ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot if len(set(indices)) == r: 258ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot yield tuple(pool[i] for i in indices) 259ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 260ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot for n in range(7): 261ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot values = [5*x-12 for x in range(n)] 262ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot for r in range(n+2): 263ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot result = list(permutations(values, r)) 264ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(len(result), 0 if r>n else fact(n) // fact(n-r)) # right number of perms 265ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(len(result), len(set(result))) # no repeats 266ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(result, sorted(result)) # lexicographic order 267ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot for p in result: 268ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(len(p), r) # r-length permutations 269ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(len(set(p)), r) # no duplicate elements 270ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertTrue(all(e in values for e in p)) # elements taken from input iterable 271ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(result, list(permutations1(values, r))) # matches first pure python version 272ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(result, list(permutations2(values, r))) # matches second pure python version 273ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot if r == n: 274ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(result, list(permutations(values, None))) # test r as None 275ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(result, list(permutations(values))) # test default r 276ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 277ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot @test_support.impl_detail("tuple resuse is CPython specific") 278ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot def test_permutations_tuple_reuse(self): 279ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(len(set(map(id, permutations('abcde', 3)))), 1) 280ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertNotEqual(len(set(map(id, list(permutations('abcde', 3))))), 1) 281ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 282ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot def test_combinatorics(self): 283ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot # Test relationships between product(), permutations(), 284ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot # combinations() and combinations_with_replacement(). 285ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 286ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot for n in range(6): 287ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot s = 'ABCDEFG'[:n] 288ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot for r in range(8): 289ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot prod = list(product(s, repeat=r)) 290ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot cwr = list(combinations_with_replacement(s, r)) 291ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot perm = list(permutations(s, r)) 292ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot comb = list(combinations(s, r)) 293ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 294ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot # Check size 295ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(len(prod), n**r) 296ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(len(cwr), (fact(n+r-1) // fact(r) // fact(n-1)) if n else (not r)) 297ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(len(perm), 0 if r>n else fact(n) // fact(n-r)) 298ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(len(comb), 0 if r>n else fact(n) // fact(r) // fact(n-r)) 299ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 300ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot # Check lexicographic order without repeated tuples 301ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(prod, sorted(set(prod))) 302ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(cwr, sorted(set(cwr))) 303ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(perm, sorted(set(perm))) 304ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(comb, sorted(set(comb))) 305ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 306ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot # Check interrelationships 307ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(cwr, [t for t in prod if sorted(t)==list(t)]) # cwr: prods which are sorted 308ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(perm, [t for t in prod if len(set(t))==r]) # perm: prods with no dups 309ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(comb, [t for t in perm if sorted(t)==list(t)]) # comb: perms that are sorted 310ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(comb, [t for t in cwr if len(set(t))==r]) # comb: cwrs without dups 311ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(comb, filter(set(cwr).__contains__, perm)) # comb: perm that is a cwr 312ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(comb, filter(set(perm).__contains__, cwr)) # comb: cwr that is a perm 313ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(comb, sorted(set(cwr) & set(perm))) # comb: both a cwr and a perm 314ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 315ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot def test_compress(self): 316ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(list(compress(data='ABCDEF', selectors=[1,0,1,0,1,1])), list('ACEF')) 317ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(list(compress('ABCDEF', [1,0,1,0,1,1])), list('ACEF')) 318ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(list(compress('ABCDEF', [0,0,0,0,0,0])), list('')) 319ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(list(compress('ABCDEF', [1,1,1,1,1,1])), list('ABCDEF')) 320ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(list(compress('ABCDEF', [1,0,1])), list('AC')) 321ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(list(compress('ABC', [0,1,1,1,1,1])), list('BC')) 322ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot n = 10000 323ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot data = chain.from_iterable(repeat(range(6), n)) 324ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot selectors = chain.from_iterable(repeat((0, 1))) 325ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(list(compress(data, selectors)), [1,3,5] * n) 326ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(TypeError, compress, None, range(6)) # 1st arg not iterable 327ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(TypeError, compress, range(6), None) # 2nd arg not iterable 328ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(TypeError, compress, range(6)) # too few args 329ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(TypeError, compress, range(6), None) # too many args 330ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 331ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot def test_count(self): 332ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(zip('abc',count()), [('a', 0), ('b', 1), ('c', 2)]) 333ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(zip('abc',count(3)), [('a', 3), ('b', 4), ('c', 5)]) 334ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(take(2, zip('abc',count(3))), [('a', 3), ('b', 4)]) 335ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(take(2, zip('abc',count(-1))), [('a', -1), ('b', 0)]) 336ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(take(2, zip('abc',count(-3))), [('a', -3), ('b', -2)]) 337ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(TypeError, count, 2, 3, 4) 338ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(TypeError, count, 'a') 339ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(list(islice(count(maxsize-5), 10)), range(maxsize-5, maxsize+5)) 340ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(list(islice(count(-maxsize-5), 10)), range(-maxsize-5, -maxsize+5)) 341ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot c = count(3) 342ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(repr(c), 'count(3)') 343ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot c.next() 344ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(repr(c), 'count(4)') 345ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot c = count(-9) 346ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(repr(c), 'count(-9)') 347ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot c.next() 348ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(repr(count(10.25)), 'count(10.25)') 349ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(c.next(), -8) 350ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot for i in (-sys.maxint-5, -sys.maxint+5 ,-10, -1, 0, 10, sys.maxint-5, sys.maxint+5): 351ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot # Test repr (ignoring the L in longs) 352ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot r1 = repr(count(i)).replace('L', '') 353ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot r2 = 'count(%r)'.__mod__(i).replace('L', '') 354ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(r1, r2) 355ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 356ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot # check copy, deepcopy, pickle 357ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot for value in -3, 3, sys.maxint-5, sys.maxint+5: 358ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot c = count(value) 359ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(next(copy.copy(c)), value) 360ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(next(copy.deepcopy(c)), value) 361ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(next(pickle.loads(pickle.dumps(c))), value) 362ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 363ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot def test_count_with_stride(self): 364ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(zip('abc',count(2,3)), [('a', 2), ('b', 5), ('c', 8)]) 365ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(zip('abc',count(start=2,step=3)), 366ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot [('a', 2), ('b', 5), ('c', 8)]) 367ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(zip('abc',count(step=-1)), 368ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot [('a', 0), ('b', -1), ('c', -2)]) 369ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(zip('abc',count(2,0)), [('a', 2), ('b', 2), ('c', 2)]) 370ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(zip('abc',count(2,1)), [('a', 2), ('b', 3), ('c', 4)]) 371ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(take(20, count(maxsize-15, 3)), take(20, range(maxsize-15, maxsize+100, 3))) 372ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(take(20, count(-maxsize-15, 3)), take(20, range(-maxsize-15,-maxsize+100, 3))) 373ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(take(3, count(2, 3.25-4j)), [2, 5.25-4j, 8.5-8j]) 374ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(take(3, count(Decimal('1.1'), Decimal('.1'))), 375ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot [Decimal('1.1'), Decimal('1.2'), Decimal('1.3')]) 376ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(take(3, count(Fraction(2,3), Fraction(1,7))), 377ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot [Fraction(2,3), Fraction(17,21), Fraction(20,21)]) 378ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(repr(take(3, count(10, 2.5))), repr([10, 12.5, 15.0])) 379ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot c = count(3, 5) 380ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(repr(c), 'count(3, 5)') 381ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot c.next() 382ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(repr(c), 'count(8, 5)') 383ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot c = count(-9, 0) 384ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(repr(c), 'count(-9, 0)') 385ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot c.next() 386ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(repr(c), 'count(-9, 0)') 387ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot c = count(-9, -3) 388ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(repr(c), 'count(-9, -3)') 389ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot c.next() 390ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(repr(c), 'count(-12, -3)') 391ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(repr(c), 'count(-12, -3)') 392ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(repr(count(10.5, 1.25)), 'count(10.5, 1.25)') 393ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(repr(count(10.5, 1)), 'count(10.5)') # suppress step=1 when it's an int 394ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(repr(count(10.5, 1.00)), 'count(10.5, 1.0)') # do show float values lilke 1.0 395ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot for i in (-sys.maxint-5, -sys.maxint+5 ,-10, -1, 0, 10, sys.maxint-5, sys.maxint+5): 396ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot for j in (-sys.maxint-5, -sys.maxint+5 ,-10, -1, 0, 1, 10, sys.maxint-5, sys.maxint+5): 397ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot # Test repr (ignoring the L in longs) 398ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot r1 = repr(count(i, j)).replace('L', '') 399ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot if j == 1: 400ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot r2 = ('count(%r)' % i).replace('L', '') 401ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot else: 402ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot r2 = ('count(%r, %r)' % (i, j)).replace('L', '') 403ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(r1, r2) 404ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 405ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot def test_cycle(self): 406ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(take(10, cycle('abc')), list('abcabcabca')) 407ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(list(cycle('')), []) 408ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(TypeError, cycle) 409ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(TypeError, cycle, 5) 410ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(list(islice(cycle(gen3()),10)), [0,1,2,0,1,2,0,1,2,0]) 411ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 412ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot def test_groupby(self): 413ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot # Check whether it accepts arguments correctly 414ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual([], list(groupby([]))) 415ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual([], list(groupby([], key=id))) 416ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(TypeError, list, groupby('abc', [])) 417ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(TypeError, groupby, None) 418ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(TypeError, groupby, 'abc', lambda x:x, 10) 419ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 420ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot # Check normal input 421ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot s = [(0, 10, 20), (0, 11,21), (0,12,21), (1,13,21), (1,14,22), 422ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot (2,15,22), (3,16,23), (3,17,23)] 423ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot dup = [] 424ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot for k, g in groupby(s, lambda r:r[0]): 425ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot for elem in g: 426ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(k, elem[0]) 427ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot dup.append(elem) 428ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(s, dup) 429ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 430ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot # Check nested case 431ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot dup = [] 432ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot for k, g in groupby(s, lambda r:r[0]): 433ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot for ik, ig in groupby(g, lambda r:r[2]): 434ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot for elem in ig: 435ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(k, elem[0]) 436ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(ik, elem[2]) 437ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot dup.append(elem) 438ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(s, dup) 439ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 440ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot # Check case where inner iterator is not used 441ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot keys = [k for k, g in groupby(s, lambda r:r[0])] 442ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot expectedkeys = set([r[0] for r in s]) 443ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(set(keys), expectedkeys) 444ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(len(keys), len(expectedkeys)) 445ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 446ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot # Exercise pipes and filters style 447ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot s = 'abracadabra' 448ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot # sort s | uniq 449ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot r = [k for k, g in groupby(sorted(s))] 450ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(r, ['a', 'b', 'c', 'd', 'r']) 451ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot # sort s | uniq -d 452ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot r = [k for k, g in groupby(sorted(s)) if list(islice(g,1,2))] 453ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(r, ['a', 'b', 'r']) 454ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot # sort s | uniq -c 455ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot r = [(len(list(g)), k) for k, g in groupby(sorted(s))] 456ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(r, [(5, 'a'), (2, 'b'), (1, 'c'), (1, 'd'), (2, 'r')]) 457ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot # sort s | uniq -c | sort -rn | head -3 458ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot r = sorted([(len(list(g)) , k) for k, g in groupby(sorted(s))], reverse=True)[:3] 459ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(r, [(5, 'a'), (2, 'r'), (2, 'b')]) 460ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 461ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot # iter.next failure 462ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot class ExpectedError(Exception): 463ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot pass 464ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot def delayed_raise(n=0): 465ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot for i in range(n): 466ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot yield 'yo' 467ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot raise ExpectedError 468ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot def gulp(iterable, keyp=None, func=list): 469ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot return [func(g) for k, g in groupby(iterable, keyp)] 470ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 471ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot # iter.next failure on outer object 472ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(ExpectedError, gulp, delayed_raise(0)) 473ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot # iter.next failure on inner object 474ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(ExpectedError, gulp, delayed_raise(1)) 475ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 476ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot # __cmp__ failure 477ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot class DummyCmp: 478ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot def __cmp__(self, dst): 479ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot raise ExpectedError 480ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot s = [DummyCmp(), DummyCmp(), None] 481ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 482ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot # __cmp__ failure on outer object 483ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(ExpectedError, gulp, s, func=id) 484ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot # __cmp__ failure on inner object 485ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(ExpectedError, gulp, s) 486ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 487ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot # keyfunc failure 488ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot def keyfunc(obj): 489ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot if keyfunc.skip > 0: 490ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot keyfunc.skip -= 1 491ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot return obj 492ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot else: 493ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot raise ExpectedError 494ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 495ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot # keyfunc failure on outer object 496ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot keyfunc.skip = 0 497ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(ExpectedError, gulp, [None], keyfunc) 498ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot keyfunc.skip = 1 499ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(ExpectedError, gulp, [None, None], keyfunc) 500ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 501ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot def test_ifilter(self): 502ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(list(ifilter(isEven, range(6))), [0,2,4]) 503ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(list(ifilter(None, [0,1,0,2,0])), [1,2]) 504ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(list(ifilter(bool, [0,1,0,2,0])), [1,2]) 505ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(take(4, ifilter(isEven, count())), [0,2,4,6]) 506ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(TypeError, ifilter) 507ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(TypeError, ifilter, lambda x:x) 508ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(TypeError, ifilter, lambda x:x, range(6), 7) 509ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(TypeError, ifilter, isEven, 3) 510ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(TypeError, ifilter(range(6), range(6)).next) 511ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 512ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot def test_ifilterfalse(self): 513ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(list(ifilterfalse(isEven, range(6))), [1,3,5]) 514ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(list(ifilterfalse(None, [0,1,0,2,0])), [0,0,0]) 515ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(list(ifilterfalse(bool, [0,1,0,2,0])), [0,0,0]) 516ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(take(4, ifilterfalse(isEven, count())), [1,3,5,7]) 517ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(TypeError, ifilterfalse) 518ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(TypeError, ifilterfalse, lambda x:x) 519ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(TypeError, ifilterfalse, lambda x:x, range(6), 7) 520ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(TypeError, ifilterfalse, isEven, 3) 521ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(TypeError, ifilterfalse(range(6), range(6)).next) 522ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 523ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot def test_izip(self): 524ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot ans = [(x,y) for x, y in izip('abc',count())] 525ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(ans, [('a', 0), ('b', 1), ('c', 2)]) 526ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(list(izip('abc', range(6))), zip('abc', range(6))) 527ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(list(izip('abcdef', range(3))), zip('abcdef', range(3))) 528ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(take(3,izip('abcdef', count())), zip('abcdef', range(3))) 529ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(list(izip('abcdef')), zip('abcdef')) 530ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(list(izip()), zip()) 531ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(TypeError, izip, 3) 532ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(TypeError, izip, range(3), 3) 533ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual([tuple(list(pair)) for pair in izip('abc', 'def')], 534ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot zip('abc', 'def')) 535ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual([pair for pair in izip('abc', 'def')], 536ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot zip('abc', 'def')) 537ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 538ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot @test_support.impl_detail("tuple reuse is specific to CPython") 539ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot def test_izip_tuple_resuse(self): 540ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot ids = map(id, izip('abc', 'def')) 541ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(min(ids), max(ids)) 542ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot ids = map(id, list(izip('abc', 'def'))) 543ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(len(dict.fromkeys(ids)), len(ids)) 544ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 545ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot def test_iziplongest(self): 546ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot for args in [ 547ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot ['abc', range(6)], 548ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot [range(6), 'abc'], 549ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot [range(1000), range(2000,2100), range(3000,3050)], 550ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot [range(1000), range(0), range(3000,3050), range(1200), range(1500)], 551ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot [range(1000), range(0), range(3000,3050), range(1200), range(1500), range(0)], 552ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot ]: 553ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot # target = map(None, *args) <- this raises a py3k warning 554ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot # this is the replacement: 555ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot target = [tuple([arg[i] if i < len(arg) else None for arg in args]) 556ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot for i in range(max(map(len, args)))] 557ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(list(izip_longest(*args)), target) 558ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(list(izip_longest(*args, **{})), target) 559ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot target = [tuple((e is None and 'X' or e) for e in t) for t in target] # Replace None fills with 'X' 560ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(list(izip_longest(*args, **dict(fillvalue='X'))), target) 561ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 562ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(take(3,izip_longest('abcdef', count())), zip('abcdef', range(3))) # take 3 from infinite input 563ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 564ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(list(izip_longest()), zip()) 565ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(list(izip_longest([])), zip([])) 566ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(list(izip_longest('abcdef')), zip('abcdef')) 567ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 568ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(list(izip_longest('abc', 'defg', **{})), 569ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot zip(list('abc') + [None], 'defg')) # empty keyword dict 570ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(TypeError, izip_longest, 3) 571ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(TypeError, izip_longest, range(3), 3) 572ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 573ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot for stmt in [ 574ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot "izip_longest('abc', fv=1)", 575ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot "izip_longest('abc', fillvalue=1, bogus_keyword=None)", 576ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot ]: 577ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot try: 578ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot eval(stmt, globals(), locals()) 579ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot except TypeError: 580ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot pass 581ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot else: 582ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.fail('Did not raise Type in: ' + stmt) 583ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 584ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual([tuple(list(pair)) for pair in izip_longest('abc', 'def')], 585ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot zip('abc', 'def')) 586ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual([pair for pair in izip_longest('abc', 'def')], 587ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot zip('abc', 'def')) 588ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 589ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot @test_support.impl_detail("tuple reuse is specific to CPython") 590ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot def test_izip_longest_tuple_reuse(self): 591ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot ids = map(id, izip_longest('abc', 'def')) 592ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(min(ids), max(ids)) 593ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot ids = map(id, list(izip_longest('abc', 'def'))) 594ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(len(dict.fromkeys(ids)), len(ids)) 595ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 596ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot def test_bug_7244(self): 597ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 598ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot class Repeater(object): 599ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot # this class is similar to itertools.repeat 600ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot def __init__(self, o, t, e): 601ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.o = o 602ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.t = int(t) 603ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.e = e 604ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot def __iter__(self): # its iterator is itself 605ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot return self 606ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot def next(self): 607ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot if self.t > 0: 608ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.t -= 1 609ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot return self.o 610ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot else: 611ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot raise self.e 612ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 613ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot # Formerly this code in would fail in debug mode 614ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot # with Undetected Error and Stop Iteration 615ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot r1 = Repeater(1, 3, StopIteration) 616ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot r2 = Repeater(2, 4, StopIteration) 617ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot def run(r1, r2): 618ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot result = [] 619ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot for i, j in izip_longest(r1, r2, fillvalue=0): 620ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot with test_support.captured_output('stdout'): 621ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot print (i, j) 622ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot result.append((i, j)) 623ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot return result 624ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(run(r1, r2), [(1,2), (1,2), (1,2), (0,2)]) 625ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 626ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot # Formerly, the RuntimeError would be lost 627ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot # and StopIteration would stop as expected 628ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot r1 = Repeater(1, 3, RuntimeError) 629ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot r2 = Repeater(2, 4, StopIteration) 630ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot it = izip_longest(r1, r2, fillvalue=0) 631ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(next(it), (1, 2)) 632ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(next(it), (1, 2)) 633ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(next(it), (1, 2)) 634ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(RuntimeError, next, it) 635ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 636ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot def test_product(self): 637ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot for args, result in [ 638ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot ([], [()]), # zero iterables 639ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot (['ab'], [('a',), ('b',)]), # one iterable 640ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot ([range(2), range(3)], [(0,0), (0,1), (0,2), (1,0), (1,1), (1,2)]), # two iterables 641ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot ([range(0), range(2), range(3)], []), # first iterable with zero length 642ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot ([range(2), range(0), range(3)], []), # middle iterable with zero length 643ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot ([range(2), range(3), range(0)], []), # last iterable with zero length 644ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot ]: 645ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(list(product(*args)), result) 646ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot for r in range(4): 647ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(list(product(*(args*r))), 648ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot list(product(*args, **dict(repeat=r)))) 649ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(len(list(product(*[range(7)]*6))), 7**6) 650ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(TypeError, product, range(6), None) 651ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 652ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot def product1(*args, **kwds): 653ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot pools = map(tuple, args) * kwds.get('repeat', 1) 654ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot n = len(pools) 655ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot if n == 0: 656ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot yield () 657ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot return 658ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot if any(len(pool) == 0 for pool in pools): 659ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot return 660ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot indices = [0] * n 661ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot yield tuple(pool[i] for pool, i in zip(pools, indices)) 662ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot while 1: 663ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot for i in reversed(range(n)): # right to left 664ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot if indices[i] == len(pools[i]) - 1: 665ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot continue 666ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot indices[i] += 1 667ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot for j in range(i+1, n): 668ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot indices[j] = 0 669ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot yield tuple(pool[i] for pool, i in zip(pools, indices)) 670ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot break 671ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot else: 672ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot return 673ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 674ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot def product2(*args, **kwds): 675ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 'Pure python version used in docs' 676ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot pools = map(tuple, args) * kwds.get('repeat', 1) 677ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot result = [[]] 678ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot for pool in pools: 679ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot result = [x+[y] for x in result for y in pool] 680ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot for prod in result: 681ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot yield tuple(prod) 682ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 683ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot argtypes = ['', 'abc', '', xrange(0), xrange(4), dict(a=1, b=2, c=3), 684ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot set('abcdefg'), range(11), tuple(range(13))] 685ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot for i in range(100): 686ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot args = [random.choice(argtypes) for j in range(random.randrange(5))] 687ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot expected_len = prod(map(len, args)) 688ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(len(list(product(*args))), expected_len) 689ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(list(product(*args)), list(product1(*args))) 690ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(list(product(*args)), list(product2(*args))) 691ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot args = map(iter, args) 692ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(len(list(product(*args))), expected_len) 693ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 694ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot @test_support.impl_detail("tuple reuse is specific to CPython") 695ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot def test_product_tuple_reuse(self): 696ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(len(set(map(id, product('abc', 'def')))), 1) 697ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertNotEqual(len(set(map(id, list(product('abc', 'def'))))), 1) 698ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 699ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot def test_repeat(self): 700ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(list(repeat(object='a', times=3)), ['a', 'a', 'a']) 701ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(zip(xrange(3),repeat('a')), 702ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot [(0, 'a'), (1, 'a'), (2, 'a')]) 703ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(list(repeat('a', 3)), ['a', 'a', 'a']) 704ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(take(3, repeat('a')), ['a', 'a', 'a']) 705ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(list(repeat('a', 0)), []) 706ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(list(repeat('a', -3)), []) 707ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(TypeError, repeat) 708ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(TypeError, repeat, None, 3, 4) 709ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(TypeError, repeat, None, 'a') 710ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot r = repeat(1+0j) 711ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(repr(r), 'repeat((1+0j))') 712ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot r = repeat(1+0j, 5) 713ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(repr(r), 'repeat((1+0j), 5)') 714ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot list(r) 715ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(repr(r), 'repeat((1+0j), 0)') 716ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 717ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot def test_imap(self): 718ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(list(imap(operator.pow, range(3), range(1,7))), 719ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot [0**1, 1**2, 2**3]) 720ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(list(imap(None, 'abc', range(5))), 721ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot [('a',0),('b',1),('c',2)]) 722ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(list(imap(None, 'abc', count())), 723ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot [('a',0),('b',1),('c',2)]) 724ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(take(2,imap(None, 'abc', count())), 725ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot [('a',0),('b',1)]) 726ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(list(imap(operator.pow, [])), []) 727ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(TypeError, imap) 728ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(TypeError, imap, operator.neg) 729ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(TypeError, imap(10, range(5)).next) 730ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(ValueError, imap(errfunc, [4], [5]).next) 731ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(TypeError, imap(onearg, [4], [5]).next) 732ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 733ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot def test_starmap(self): 734ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(list(starmap(operator.pow, zip(range(3), range(1,7)))), 735ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot [0**1, 1**2, 2**3]) 736ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(take(3, starmap(operator.pow, izip(count(), count(1)))), 737ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot [0**1, 1**2, 2**3]) 738ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(list(starmap(operator.pow, [])), []) 739ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(list(starmap(operator.pow, [iter([4,5])])), [4**5]) 740ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(TypeError, list, starmap(operator.pow, [None])) 741ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(TypeError, starmap) 742ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(TypeError, starmap, operator.pow, [(4,5)], 'extra') 743ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(TypeError, starmap(10, [(4,5)]).next) 744ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(ValueError, starmap(errfunc, [(4,5)]).next) 745ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(TypeError, starmap(onearg, [(4,5)]).next) 746ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 747ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot def test_islice(self): 748ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot for args in [ # islice(args) should agree with range(args) 749ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot (10, 20, 3), 750ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot (10, 3, 20), 751ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot (10, 20), 752ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot (10, 3), 753ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot (20,) 754ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot ]: 755ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(list(islice(xrange(100), *args)), range(*args)) 756ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 757ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot for args, tgtargs in [ # Stop when seqn is exhausted 758ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot ((10, 110, 3), ((10, 100, 3))), 759ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot ((10, 110), ((10, 100))), 760ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot ((110,), (100,)) 761ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot ]: 762ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(list(islice(xrange(100), *args)), range(*tgtargs)) 763ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 764ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot # Test stop=None 765ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(list(islice(xrange(10), None)), range(10)) 766ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(list(islice(xrange(10), None, None)), range(10)) 767ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(list(islice(xrange(10), None, None, None)), range(10)) 768ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(list(islice(xrange(10), 2, None)), range(2, 10)) 769ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(list(islice(xrange(10), 1, None, 2)), range(1, 10, 2)) 770ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 771ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot # Test number of items consumed SF #1171417 772ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot it = iter(range(10)) 773ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(list(islice(it, 3)), range(3)) 774ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(list(it), range(3, 10)) 775ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 776ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot # Test invalid arguments 777ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(TypeError, islice, xrange(10)) 778ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(TypeError, islice, xrange(10), 1, 2, 3, 4) 779ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(ValueError, islice, xrange(10), -5, 10, 1) 780ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(ValueError, islice, xrange(10), 1, -5, -1) 781ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(ValueError, islice, xrange(10), 1, 10, -1) 782ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(ValueError, islice, xrange(10), 1, 10, 0) 783ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(ValueError, islice, xrange(10), 'a') 784ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(ValueError, islice, xrange(10), 'a', 1) 785ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(ValueError, islice, xrange(10), 1, 'a') 786ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(ValueError, islice, xrange(10), 'a', 1, 1) 787ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(ValueError, islice, xrange(10), 1, 'a', 1) 788ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(len(list(islice(count(), 1, 10, maxsize))), 1) 789ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 790ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot # Issue #10323: Less islice in a predictable state 791ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot c = count() 792ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(list(islice(c, 1, 3, 50)), [1]) 793ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(next(c), 3) 794ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 795ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot def test_takewhile(self): 796ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot data = [1, 3, 5, 20, 2, 4, 6, 8] 797ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot underten = lambda x: x<10 798ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(list(takewhile(underten, data)), [1, 3, 5]) 799ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(list(takewhile(underten, [])), []) 800ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(TypeError, takewhile) 801ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(TypeError, takewhile, operator.pow) 802ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(TypeError, takewhile, operator.pow, [(4,5)], 'extra') 803ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(TypeError, takewhile(10, [(4,5)]).next) 804ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(ValueError, takewhile(errfunc, [(4,5)]).next) 805ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot t = takewhile(bool, [1, 1, 1, 0, 0, 0]) 806ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(list(t), [1, 1, 1]) 807ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(StopIteration, t.next) 808ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 809ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot def test_dropwhile(self): 810ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot data = [1, 3, 5, 20, 2, 4, 6, 8] 811ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot underten = lambda x: x<10 812ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(list(dropwhile(underten, data)), [20, 2, 4, 6, 8]) 813ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(list(dropwhile(underten, [])), []) 814ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(TypeError, dropwhile) 815ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(TypeError, dropwhile, operator.pow) 816ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(TypeError, dropwhile, operator.pow, [(4,5)], 'extra') 817ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(TypeError, dropwhile(10, [(4,5)]).next) 818ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(ValueError, dropwhile(errfunc, [(4,5)]).next) 819ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 820ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot def test_tee(self): 821ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot n = 200 822ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot def irange(n): 823ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot for i in xrange(n): 824ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot yield i 825ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 826ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot a, b = tee([]) # test empty iterator 827ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(list(a), []) 828ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(list(b), []) 829ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 830ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot a, b = tee(irange(n)) # test 100% interleaved 831ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(zip(a,b), zip(range(n),range(n))) 832ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 833ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot a, b = tee(irange(n)) # test 0% interleaved 834ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(list(a), range(n)) 835ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(list(b), range(n)) 836ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 837ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot a, b = tee(irange(n)) # test dealloc of leading iterator 838ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot for i in xrange(100): 839ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(a.next(), i) 840ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot del a 841ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(list(b), range(n)) 842ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 843ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot a, b = tee(irange(n)) # test dealloc of trailing iterator 844ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot for i in xrange(100): 845ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(a.next(), i) 846ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot del b 847ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(list(a), range(100, n)) 848ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 849ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot for j in xrange(5): # test randomly interleaved 850ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot order = [0]*n + [1]*n 851ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot random.shuffle(order) 852ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot lists = ([], []) 853ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot its = tee(irange(n)) 854ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot for i in order: 855ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot value = its[i].next() 856ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot lists[i].append(value) 857ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(lists[0], range(n)) 858ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(lists[1], range(n)) 859ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 860ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot # test argument format checking 861ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(TypeError, tee) 862ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(TypeError, tee, 3) 863ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(TypeError, tee, [1,2], 'x') 864ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(TypeError, tee, [1,2], 3, 'x') 865ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 866ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot # tee object should be instantiable 867ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot a, b = tee('abc') 868ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot c = type(a)('def') 869ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(list(c), list('def')) 870ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 871ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot # test long-lagged and multi-way split 872ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot a, b, c = tee(xrange(2000), 3) 873ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot for i in xrange(100): 874ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(a.next(), i) 875ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(list(b), range(2000)) 876ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual([c.next(), c.next()], range(2)) 877ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(list(a), range(100,2000)) 878ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(list(c), range(2,2000)) 879ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 880ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot # test values of n 881ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(TypeError, tee, 'abc', 'invalid') 882ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(ValueError, tee, [], -1) 883ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot for n in xrange(5): 884ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot result = tee('abc', n) 885ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(type(result), tuple) 886ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(len(result), n) 887ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(map(list, result), [list('abc')]*n) 888ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 889ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot # tee pass-through to copyable iterator 890ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot a, b = tee('abc') 891ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot c, d = tee(a) 892ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertTrue(a is c) 893ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 894ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot # test tee_new 895ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot t1, t2 = tee('abc') 896ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot tnew = type(t1) 897ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(TypeError, tnew) 898ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(TypeError, tnew, 10) 899ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot t3 = tnew(t1) 900ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertTrue(list(t1) == list(t2) == list(t3) == list('abc')) 901ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 902ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot # test that tee objects are weak referencable 903ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot a, b = tee(xrange(10)) 904ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot p = proxy(a) 905ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(getattr(p, '__class__'), type(b)) 906ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot del a 907ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(ReferenceError, getattr, p, '__class__') 908ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 909ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot # Issue 13454: Crash when deleting backward iterator from tee() 910ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot def test_tee_del_backward(self): 911ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot forward, backward = tee(repeat(None, 20000000)) 912ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot any(forward) # exhaust the iterator 913ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot del backward 914ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 915ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot def test_StopIteration(self): 916ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(StopIteration, izip().next) 917ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 918ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot for f in (chain, cycle, izip, groupby): 919ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(StopIteration, f([]).next) 920ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(StopIteration, f(StopNow()).next) 921ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 922ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(StopIteration, islice([], None).next) 923ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(StopIteration, islice(StopNow(), None).next) 924ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 925ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot p, q = tee([]) 926ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(StopIteration, p.next) 927ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(StopIteration, q.next) 928ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot p, q = tee(StopNow()) 929ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(StopIteration, p.next) 930ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(StopIteration, q.next) 931ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 932ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(StopIteration, repeat(None, 0).next) 933ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 934ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot for f in (ifilter, ifilterfalse, imap, takewhile, dropwhile, starmap): 935ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(StopIteration, f(lambda x:x, []).next) 936ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(StopIteration, f(lambda x:x, StopNow()).next) 937ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 938ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robotclass TestExamples(unittest.TestCase): 939ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 940ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot def test_chain(self): 941ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(''.join(chain('ABC', 'DEF')), 'ABCDEF') 942ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 943ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot def test_chain_from_iterable(self): 944ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(''.join(chain.from_iterable(['ABC', 'DEF'])), 'ABCDEF') 945ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 946ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot def test_combinations(self): 947ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(list(combinations('ABCD', 2)), 948ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot [('A','B'), ('A','C'), ('A','D'), ('B','C'), ('B','D'), ('C','D')]) 949ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(list(combinations(range(4), 3)), 950ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot [(0,1,2), (0,1,3), (0,2,3), (1,2,3)]) 951ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 952ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot def test_combinations_with_replacement(self): 953ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(list(combinations_with_replacement('ABC', 2)), 954ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot [('A','A'), ('A','B'), ('A','C'), ('B','B'), ('B','C'), ('C','C')]) 955ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 956ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot def test_compress(self): 957ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(list(compress('ABCDEF', [1,0,1,0,1,1])), list('ACEF')) 958ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 959ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot def test_count(self): 960ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(list(islice(count(10), 5)), [10, 11, 12, 13, 14]) 961ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 962ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot def test_cycle(self): 963ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(list(islice(cycle('ABCD'), 12)), list('ABCDABCDABCD')) 964ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 965ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot def test_dropwhile(self): 966ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(list(dropwhile(lambda x: x<5, [1,4,6,4,1])), [6,4,1]) 967ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 968ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot def test_groupby(self): 969ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual([k for k, g in groupby('AAAABBBCCDAABBB')], 970ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot list('ABCDAB')) 971ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual([(list(g)) for k, g in groupby('AAAABBBCCD')], 972ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot [list('AAAA'), list('BBB'), list('CC'), list('D')]) 973ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 974ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot def test_ifilter(self): 975ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(list(ifilter(lambda x: x%2, range(10))), [1,3,5,7,9]) 976ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 977ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot def test_ifilterfalse(self): 978ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(list(ifilterfalse(lambda x: x%2, range(10))), [0,2,4,6,8]) 979ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 980ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot def test_imap(self): 981ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(list(imap(pow, (2,3,10), (5,2,3))), [32, 9, 1000]) 982ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 983ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot def test_islice(self): 984ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(list(islice('ABCDEFG', 2)), list('AB')) 985ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(list(islice('ABCDEFG', 2, 4)), list('CD')) 986ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(list(islice('ABCDEFG', 2, None)), list('CDEFG')) 987ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(list(islice('ABCDEFG', 0, None, 2)), list('ACEG')) 988ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 989ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot def test_izip(self): 990ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(list(izip('ABCD', 'xy')), [('A', 'x'), ('B', 'y')]) 991ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 992ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot def test_izip_longest(self): 993ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(list(izip_longest('ABCD', 'xy', fillvalue='-')), 994ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot [('A', 'x'), ('B', 'y'), ('C', '-'), ('D', '-')]) 995ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 996ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot def test_permutations(self): 997ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(list(permutations('ABCD', 2)), 998ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot map(tuple, 'AB AC AD BA BC BD CA CB CD DA DB DC'.split())) 999ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(list(permutations(range(3))), 1000ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot [(0,1,2), (0,2,1), (1,0,2), (1,2,0), (2,0,1), (2,1,0)]) 1001ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 1002ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot def test_product(self): 1003ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(list(product('ABCD', 'xy')), 1004ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot map(tuple, 'Ax Ay Bx By Cx Cy Dx Dy'.split())) 1005ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(list(product(range(2), repeat=3)), 1006ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot [(0,0,0), (0,0,1), (0,1,0), (0,1,1), 1007ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot (1,0,0), (1,0,1), (1,1,0), (1,1,1)]) 1008ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 1009ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot def test_repeat(self): 1010ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(list(repeat(10, 3)), [10, 10, 10]) 1011ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 1012ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot def test_stapmap(self): 1013ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(list(starmap(pow, [(2,5), (3,2), (10,3)])), 1014ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot [32, 9, 1000]) 1015ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 1016ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot def test_takewhile(self): 1017ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(list(takewhile(lambda x: x<5, [1,4,6,4,1])), [1,4]) 1018ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 1019ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 1020ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robotclass TestGC(unittest.TestCase): 1021ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 1022ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot def makecycle(self, iterator, container): 1023ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot container.append(iterator) 1024ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot iterator.next() 1025ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot del container, iterator 1026ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 1027ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot def test_chain(self): 1028ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot a = [] 1029ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.makecycle(chain(a), a) 1030ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 1031ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot def test_chain_from_iterable(self): 1032ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot a = [] 1033ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.makecycle(chain.from_iterable([a]), a) 1034ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 1035ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot def test_combinations(self): 1036ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot a = [] 1037ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.makecycle(combinations([1,2,a,3], 3), a) 1038ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 1039ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot def test_combinations_with_replacement(self): 1040ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot a = [] 1041ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.makecycle(combinations_with_replacement([1,2,a,3], 3), a) 1042ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 1043ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot def test_compress(self): 1044ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot a = [] 1045ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.makecycle(compress('ABCDEF', [1,0,1,0,1,0]), a) 1046ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 1047ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot def test_count(self): 1048ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot a = [] 1049ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot Int = type('Int', (int,), dict(x=a)) 1050ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.makecycle(count(Int(0), Int(1)), a) 1051ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 1052ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot def test_cycle(self): 1053ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot a = [] 1054ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.makecycle(cycle([a]*2), a) 1055ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 1056ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot def test_dropwhile(self): 1057ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot a = [] 1058ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.makecycle(dropwhile(bool, [0, a, a]), a) 1059ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 1060ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot def test_groupby(self): 1061ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot a = [] 1062ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.makecycle(groupby([a]*2, lambda x:x), a) 1063ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 1064ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot def test_issue2246(self): 1065ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot # Issue 2246 -- the _grouper iterator was not included in GC 1066ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot n = 10 1067ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot keyfunc = lambda x: x 1068ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot for i, j in groupby(xrange(n), key=keyfunc): 1069ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot keyfunc.__dict__.setdefault('x',[]).append(j) 1070ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 1071ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot def test_ifilter(self): 1072ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot a = [] 1073ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.makecycle(ifilter(lambda x:True, [a]*2), a) 1074ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 1075ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot def test_ifilterfalse(self): 1076ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot a = [] 1077ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.makecycle(ifilterfalse(lambda x:False, a), a) 1078ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 1079ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot def test_izip(self): 1080ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot a = [] 1081ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.makecycle(izip([a]*2, [a]*3), a) 1082ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 1083ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot def test_izip_longest(self): 1084ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot a = [] 1085ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.makecycle(izip_longest([a]*2, [a]*3), a) 1086ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot b = [a, None] 1087ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.makecycle(izip_longest([a]*2, [a]*3, fillvalue=b), a) 1088ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 1089ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot def test_imap(self): 1090ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot a = [] 1091ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.makecycle(imap(lambda x:x, [a]*2), a) 1092ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 1093ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot def test_islice(self): 1094ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot a = [] 1095ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.makecycle(islice([a]*2, None), a) 1096ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 1097ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot def test_permutations(self): 1098ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot a = [] 1099ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.makecycle(permutations([1,2,a,3], 3), a) 1100ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 1101ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot def test_product(self): 1102ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot a = [] 1103ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.makecycle(product([1,2,a,3], repeat=3), a) 1104ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 1105ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot def test_repeat(self): 1106ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot a = [] 1107ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.makecycle(repeat(a), a) 1108ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 1109ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot def test_starmap(self): 1110ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot a = [] 1111ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.makecycle(starmap(lambda *t: t, [(a,a)]*2), a) 1112ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 1113ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot def test_takewhile(self): 1114ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot a = [] 1115ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.makecycle(takewhile(bool, [1, 0, a, a]), a) 1116ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 1117ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robotdef R(seqn): 1118ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 'Regular generator' 1119ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot for i in seqn: 1120ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot yield i 1121ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 1122ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robotclass G: 1123ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 'Sequence using __getitem__' 1124ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot def __init__(self, seqn): 1125ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.seqn = seqn 1126ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot def __getitem__(self, i): 1127ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot return self.seqn[i] 1128ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 1129ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robotclass I: 1130ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 'Sequence using iterator protocol' 1131ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot def __init__(self, seqn): 1132ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.seqn = seqn 1133ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.i = 0 1134ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot def __iter__(self): 1135ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot return self 1136ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot def next(self): 1137ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot if self.i >= len(self.seqn): raise StopIteration 1138ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot v = self.seqn[self.i] 1139ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.i += 1 1140ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot return v 1141ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 1142ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robotclass Ig: 1143ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 'Sequence using iterator protocol defined with a generator' 1144ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot def __init__(self, seqn): 1145ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.seqn = seqn 1146ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.i = 0 1147ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot def __iter__(self): 1148ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot for val in self.seqn: 1149ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot yield val 1150ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 1151ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robotclass X: 1152ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 'Missing __getitem__ and __iter__' 1153ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot def __init__(self, seqn): 1154ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.seqn = seqn 1155ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.i = 0 1156ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot def next(self): 1157ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot if self.i >= len(self.seqn): raise StopIteration 1158ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot v = self.seqn[self.i] 1159ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.i += 1 1160ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot return v 1161ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 1162ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robotclass N: 1163ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 'Iterator missing next()' 1164ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot def __init__(self, seqn): 1165ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.seqn = seqn 1166ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.i = 0 1167ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot def __iter__(self): 1168ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot return self 1169ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 1170ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robotclass E: 1171ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 'Test propagation of exceptions' 1172ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot def __init__(self, seqn): 1173ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.seqn = seqn 1174ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.i = 0 1175ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot def __iter__(self): 1176ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot return self 1177ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot def next(self): 1178ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 3 // 0 1179ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 1180ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robotclass S: 1181ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 'Test immediate stop' 1182ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot def __init__(self, seqn): 1183ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot pass 1184ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot def __iter__(self): 1185ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot return self 1186ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot def next(self): 1187ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot raise StopIteration 1188ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 1189ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robotdef L(seqn): 1190ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 'Test multiple tiers of iterators' 1191ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot return chain(imap(lambda x:x, R(Ig(G(seqn))))) 1192ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 1193ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 1194ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robotclass TestVariousIteratorArgs(unittest.TestCase): 1195ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 1196ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot def test_chain(self): 1197ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot for s in ("123", "", range(1000), ('do', 1.2), xrange(2000,2200,5)): 1198ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot for g in (G, I, Ig, S, L, R): 1199ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(list(chain(g(s))), list(g(s))) 1200ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(list(chain(g(s), g(s))), list(g(s))+list(g(s))) 1201ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(TypeError, list, chain(X(s))) 1202ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(TypeError, list, chain(N(s))) 1203ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(ZeroDivisionError, list, chain(E(s))) 1204ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 1205ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot def test_compress(self): 1206ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot for s in ("123", "", range(1000), ('do', 1.2), xrange(2000,2200,5)): 1207ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot n = len(s) 1208ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot for g in (G, I, Ig, S, L, R): 1209ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(list(compress(g(s), repeat(1))), list(g(s))) 1210ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(TypeError, compress, X(s), repeat(1)) 1211ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(TypeError, list, compress(N(s), repeat(1))) 1212ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(ZeroDivisionError, list, compress(E(s), repeat(1))) 1213ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 1214ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot def test_product(self): 1215ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot for s in ("123", "", range(1000), ('do', 1.2), xrange(2000,2200,5)): 1216ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(TypeError, product, X(s)) 1217ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(TypeError, product, N(s)) 1218ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(ZeroDivisionError, product, E(s)) 1219ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 1220ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot def test_cycle(self): 1221ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot for s in ("123", "", range(1000), ('do', 1.2), xrange(2000,2200,5)): 1222ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot for g in (G, I, Ig, S, L, R): 1223ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot tgtlen = len(s) * 3 1224ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot expected = list(g(s))*3 1225ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot actual = list(islice(cycle(g(s)), tgtlen)) 1226ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(actual, expected) 1227ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(TypeError, cycle, X(s)) 1228ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(TypeError, list, cycle(N(s))) 1229ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(ZeroDivisionError, list, cycle(E(s))) 1230ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 1231ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot def test_groupby(self): 1232ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot for s in (range(10), range(0), range(1000), (7,11), xrange(2000,2200,5)): 1233ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot for g in (G, I, Ig, S, L, R): 1234ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual([k for k, sb in groupby(g(s))], list(g(s))) 1235ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(TypeError, groupby, X(s)) 1236ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(TypeError, list, groupby(N(s))) 1237ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(ZeroDivisionError, list, groupby(E(s))) 1238ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 1239ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot def test_ifilter(self): 1240ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot for s in (range(10), range(0), range(1000), (7,11), xrange(2000,2200,5)): 1241ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot for g in (G, I, Ig, S, L, R): 1242ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(list(ifilter(isEven, g(s))), filter(isEven, g(s))) 1243ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(TypeError, ifilter, isEven, X(s)) 1244ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(TypeError, list, ifilter(isEven, N(s))) 1245ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(ZeroDivisionError, list, ifilter(isEven, E(s))) 1246ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 1247ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot def test_ifilterfalse(self): 1248ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot for s in (range(10), range(0), range(1000), (7,11), xrange(2000,2200,5)): 1249ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot for g in (G, I, Ig, S, L, R): 1250ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(list(ifilterfalse(isEven, g(s))), filter(isOdd, g(s))) 1251ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(TypeError, ifilterfalse, isEven, X(s)) 1252ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(TypeError, list, ifilterfalse(isEven, N(s))) 1253ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(ZeroDivisionError, list, ifilterfalse(isEven, E(s))) 1254ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 1255ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot def test_izip(self): 1256ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot for s in ("123", "", range(1000), ('do', 1.2), xrange(2000,2200,5)): 1257ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot for g in (G, I, Ig, S, L, R): 1258ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(list(izip(g(s))), zip(g(s))) 1259ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(list(izip(g(s), g(s))), zip(g(s), g(s))) 1260ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(TypeError, izip, X(s)) 1261ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(TypeError, list, izip(N(s))) 1262ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(ZeroDivisionError, list, izip(E(s))) 1263ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 1264ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot def test_iziplongest(self): 1265ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot for s in ("123", "", range(1000), ('do', 1.2), xrange(2000,2200,5)): 1266ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot for g in (G, I, Ig, S, L, R): 1267ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(list(izip_longest(g(s))), zip(g(s))) 1268ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(list(izip_longest(g(s), g(s))), zip(g(s), g(s))) 1269ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(TypeError, izip_longest, X(s)) 1270ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(TypeError, list, izip_longest(N(s))) 1271ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(ZeroDivisionError, list, izip_longest(E(s))) 1272ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 1273ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot def test_imap(self): 1274ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot for s in (range(10), range(0), range(100), (7,11), xrange(20,50,5)): 1275ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot for g in (G, I, Ig, S, L, R): 1276ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(list(imap(onearg, g(s))), map(onearg, g(s))) 1277ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(list(imap(operator.pow, g(s), g(s))), map(operator.pow, g(s), g(s))) 1278ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(TypeError, imap, onearg, X(s)) 1279ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(TypeError, list, imap(onearg, N(s))) 1280ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(ZeroDivisionError, list, imap(onearg, E(s))) 1281ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 1282ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot def test_islice(self): 1283ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot for s in ("12345", "", range(1000), ('do', 1.2), xrange(2000,2200,5)): 1284ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot for g in (G, I, Ig, S, L, R): 1285ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(list(islice(g(s),1,None,2)), list(g(s))[1::2]) 1286ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(TypeError, islice, X(s), 10) 1287ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(TypeError, list, islice(N(s), 10)) 1288ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(ZeroDivisionError, list, islice(E(s), 10)) 1289ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 1290ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot def test_starmap(self): 1291ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot for s in (range(10), range(0), range(100), (7,11), xrange(20,50,5)): 1292ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot for g in (G, I, Ig, S, L, R): 1293ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot ss = zip(s, s) 1294ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(list(starmap(operator.pow, g(ss))), map(operator.pow, g(s), g(s))) 1295ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(TypeError, starmap, operator.pow, X(ss)) 1296ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(TypeError, list, starmap(operator.pow, N(ss))) 1297ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(ZeroDivisionError, list, starmap(operator.pow, E(ss))) 1298ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 1299ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot def test_takewhile(self): 1300ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot for s in (range(10), range(0), range(1000), (7,11), xrange(2000,2200,5)): 1301ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot for g in (G, I, Ig, S, L, R): 1302ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot tgt = [] 1303ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot for elem in g(s): 1304ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot if not isEven(elem): break 1305ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot tgt.append(elem) 1306ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(list(takewhile(isEven, g(s))), tgt) 1307ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(TypeError, takewhile, isEven, X(s)) 1308ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(TypeError, list, takewhile(isEven, N(s))) 1309ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(ZeroDivisionError, list, takewhile(isEven, E(s))) 1310ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 1311ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot def test_dropwhile(self): 1312ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot for s in (range(10), range(0), range(1000), (7,11), xrange(2000,2200,5)): 1313ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot for g in (G, I, Ig, S, L, R): 1314ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot tgt = [] 1315ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot for elem in g(s): 1316ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot if not tgt and isOdd(elem): continue 1317ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot tgt.append(elem) 1318ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(list(dropwhile(isOdd, g(s))), tgt) 1319ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(TypeError, dropwhile, isOdd, X(s)) 1320ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(TypeError, list, dropwhile(isOdd, N(s))) 1321ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(ZeroDivisionError, list, dropwhile(isOdd, E(s))) 1322ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 1323ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot def test_tee(self): 1324ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot for s in ("123", "", range(1000), ('do', 1.2), xrange(2000,2200,5)): 1325ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot for g in (G, I, Ig, S, L, R): 1326ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot it1, it2 = tee(g(s)) 1327ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(list(it1), list(g(s))) 1328ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(list(it2), list(g(s))) 1329ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(TypeError, tee, X(s)) 1330ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(TypeError, list, tee(N(s))[0]) 1331ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(ZeroDivisionError, list, tee(E(s))[0]) 1332ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 1333ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robotclass LengthTransparency(unittest.TestCase): 1334ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 1335ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot def test_repeat(self): 1336ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot from test.test_iterlen import len 1337ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(len(repeat(None, 50)), 50) 1338ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(TypeError, len, repeat(None)) 1339ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 1340ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robotclass RegressionTests(unittest.TestCase): 1341ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 1342ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot def test_sf_793826(self): 1343ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot # Fix Armin Rigo's successful efforts to wreak havoc 1344ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 1345ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot def mutatingtuple(tuple1, f, tuple2): 1346ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot # this builds a tuple t which is a copy of tuple1, 1347ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot # then calls f(t), then mutates t to be equal to tuple2 1348ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot # (needs len(tuple1) == len(tuple2)). 1349ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot def g(value, first=[1]): 1350ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot if first: 1351ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot del first[:] 1352ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot f(z.next()) 1353ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot return value 1354ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot items = list(tuple2) 1355ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot items[1:1] = list(tuple1) 1356ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot gen = imap(g, items) 1357ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot z = izip(*[gen]*len(tuple1)) 1358ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot z.next() 1359ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 1360ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot def f(t): 1361ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot global T 1362ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot T = t 1363ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot first[:] = list(T) 1364ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 1365ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot first = [] 1366ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot mutatingtuple((1,2,3), f, (4,5,6)) 1367ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot second = list(T) 1368ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(first, second) 1369ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 1370ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 1371ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot def test_sf_950057(self): 1372ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot # Make sure that chain() and cycle() catch exceptions immediately 1373ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot # rather than when shifting between input sources 1374ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 1375ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot def gen1(): 1376ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot hist.append(0) 1377ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot yield 1 1378ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot hist.append(1) 1379ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot raise AssertionError 1380ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot hist.append(2) 1381ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 1382ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot def gen2(x): 1383ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot hist.append(3) 1384ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot yield 2 1385ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot hist.append(4) 1386ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot if x: 1387ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot raise StopIteration 1388ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 1389ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot hist = [] 1390ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(AssertionError, list, chain(gen1(), gen2(False))) 1391ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(hist, [0,1]) 1392ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 1393ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot hist = [] 1394ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(AssertionError, list, chain(gen1(), gen2(True))) 1395ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(hist, [0,1]) 1396ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 1397ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot hist = [] 1398ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertRaises(AssertionError, list, cycle(gen1())) 1399ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertEqual(hist, [0,1]) 1400ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 1401ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robotclass SubclassWithKwargsTest(unittest.TestCase): 1402ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot def test_keywords_in_subclass(self): 1403ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot # count is not subclassable... 1404ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot for cls in (repeat, izip, ifilter, ifilterfalse, chain, imap, 1405ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot starmap, islice, takewhile, dropwhile, cycle, compress): 1406ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot class Subclass(cls): 1407ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot def __init__(self, newarg=None, *args): 1408ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot cls.__init__(self, *args) 1409ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot try: 1410ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot Subclass(newarg=1) 1411ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot except TypeError, err: 1412ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot # we expect type errors because of wrong argument count 1413ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot self.assertNotIn("does not take keyword arguments", err.args[0]) 1414ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 1415ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 1416ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robotlibreftest = """ Doctest for examples in the library reference: libitertools.tex 1417ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 1418ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 1419ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot>>> amounts = [120.15, 764.05, 823.14] 1420ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot>>> for checknum, amount in izip(count(1200), amounts): 1421ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot... print 'Check %d is for $%.2f' % (checknum, amount) 1422ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot... 1423ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team RobotCheck 1200 is for $120.15 1424ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team RobotCheck 1201 is for $764.05 1425ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team RobotCheck 1202 is for $823.14 1426ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 1427ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot>>> import operator 1428ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot>>> for cube in imap(operator.pow, xrange(1,4), repeat(3)): 1429ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot... print cube 1430ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot... 1431ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot1 1432ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot8 1433ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot27 1434ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 1435ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot>>> reportlines = ['EuroPython', 'Roster', '', 'alex', '', 'laura', '', 'martin', '', 'walter', '', 'samuele'] 1436ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot>>> for name in islice(reportlines, 3, None, 2): 1437ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot... print name.title() 1438ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot... 1439ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team RobotAlex 1440ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team RobotLaura 1441ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team RobotMartin 1442ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team RobotWalter 1443ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team RobotSamuele 1444ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 1445ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot>>> from operator import itemgetter 1446ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot>>> d = dict(a=1, b=2, c=1, d=2, e=1, f=2, g=3) 1447ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot>>> di = sorted(sorted(d.iteritems()), key=itemgetter(1)) 1448ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot>>> for k, g in groupby(di, itemgetter(1)): 1449ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot... print k, map(itemgetter(0), g) 1450ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot... 1451ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot1 ['a', 'c', 'e'] 1452ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot2 ['b', 'd', 'f'] 1453ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot3 ['g'] 1454ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 1455ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot# Find runs of consecutive numbers using groupby. The key to the solution 1456ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot# is differencing with a range so that consecutive numbers all appear in 1457ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot# same group. 1458ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot>>> data = [ 1, 4,5,6, 10, 15,16,17,18, 22, 25,26,27,28] 1459ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot>>> for k, g in groupby(enumerate(data), lambda t:t[0]-t[1]): 1460ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot... print map(operator.itemgetter(1), g) 1461ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot... 1462ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot[1] 1463ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot[4, 5, 6] 1464ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot[10] 1465ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot[15, 16, 17, 18] 1466ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot[22] 1467ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot[25, 26, 27, 28] 1468ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 1469ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot>>> def take(n, iterable): 1470ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot... "Return first n items of the iterable as a list" 1471ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot... return list(islice(iterable, n)) 1472ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 1473ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot>>> def enumerate(iterable, start=0): 1474ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot... return izip(count(start), iterable) 1475ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 1476ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot>>> def tabulate(function, start=0): 1477ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot... "Return function(0), function(1), ..." 1478ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot... return imap(function, count(start)) 1479ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 1480ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot>>> def nth(iterable, n, default=None): 1481ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot... "Returns the nth item or a default value" 1482ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot... return next(islice(iterable, n, None), default) 1483ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 1484ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot>>> def quantify(iterable, pred=bool): 1485ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot... "Count how many times the predicate is true" 1486ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot... return sum(imap(pred, iterable)) 1487ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 1488ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot>>> def padnone(iterable): 1489ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot... "Returns the sequence elements and then returns None indefinitely" 1490ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot... return chain(iterable, repeat(None)) 1491ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 1492ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot>>> def ncycles(iterable, n): 1493ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot... "Returns the sequence elements n times" 1494ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot... return chain(*repeat(iterable, n)) 1495ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 1496ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot>>> def dotproduct(vec1, vec2): 1497ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot... return sum(imap(operator.mul, vec1, vec2)) 1498ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 1499ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot>>> def flatten(listOfLists): 1500ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot... return list(chain.from_iterable(listOfLists)) 1501ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 1502ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot>>> def repeatfunc(func, times=None, *args): 1503ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot... "Repeat calls to func with specified arguments." 1504ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot... " Example: repeatfunc(random.random)" 1505ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot... if times is None: 1506ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot... return starmap(func, repeat(args)) 1507ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot... else: 1508ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot... return starmap(func, repeat(args, times)) 1509ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 1510ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot>>> def pairwise(iterable): 1511ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot... "s -> (s0,s1), (s1,s2), (s2, s3), ..." 1512ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot... a, b = tee(iterable) 1513ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot... for elem in b: 1514ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot... break 1515ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot... return izip(a, b) 1516ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 1517ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot>>> def grouper(n, iterable, fillvalue=None): 1518ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot... "grouper(3, 'ABCDEFG', 'x') --> ABC DEF Gxx" 1519ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot... args = [iter(iterable)] * n 1520ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot... return izip_longest(fillvalue=fillvalue, *args) 1521ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 1522ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot>>> def roundrobin(*iterables): 1523ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot... "roundrobin('ABC', 'D', 'EF') --> A D E B F C" 1524ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot... # Recipe credited to George Sakkis 1525ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot... pending = len(iterables) 1526ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot... nexts = cycle(iter(it).next for it in iterables) 1527ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot... while pending: 1528ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot... try: 1529ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot... for next in nexts: 1530ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot... yield next() 1531ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot... except StopIteration: 1532ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot... pending -= 1 1533ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot... nexts = cycle(islice(nexts, pending)) 1534ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 1535ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot>>> def powerset(iterable): 1536ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot... "powerset([1,2,3]) --> () (1,) (2,) (3,) (1,2) (1,3) (2,3) (1,2,3)" 1537ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot... s = list(iterable) 1538ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot... return chain.from_iterable(combinations(s, r) for r in range(len(s)+1)) 1539ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 1540ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot>>> def unique_everseen(iterable, key=None): 1541ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot... "List unique elements, preserving order. Remember all elements ever seen." 1542ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot... # unique_everseen('AAAABBBCCDAABBB') --> A B C D 1543ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot... # unique_everseen('ABBCcAD', str.lower) --> A B C D 1544ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot... seen = set() 1545ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot... seen_add = seen.add 1546ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot... if key is None: 1547ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot... for element in iterable: 1548ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot... if element not in seen: 1549ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot... seen_add(element) 1550ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot... yield element 1551ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot... else: 1552ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot... for element in iterable: 1553ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot... k = key(element) 1554ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot... if k not in seen: 1555ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot... seen_add(k) 1556ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot... yield element 1557ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 1558ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot>>> def unique_justseen(iterable, key=None): 1559ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot... "List unique elements, preserving order. Remember only the element just seen." 1560ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot... # unique_justseen('AAAABBBCCDAABBB') --> A B C D A B 1561ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot... # unique_justseen('ABBCcAD', str.lower) --> A B C A D 1562ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot... return imap(next, imap(itemgetter(1), groupby(iterable, key))) 1563ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 1564ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team RobotThis is not part of the examples but it tests to make sure the definitions 1565ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robotperform as purported. 1566ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 1567ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot>>> take(10, count()) 1568ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot[0, 1, 2, 3, 4, 5, 6, 7, 8, 9] 1569ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 1570ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot>>> list(enumerate('abc')) 1571ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot[(0, 'a'), (1, 'b'), (2, 'c')] 1572ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 1573ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot>>> list(islice(tabulate(lambda x: 2*x), 4)) 1574ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot[0, 2, 4, 6] 1575ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 1576ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot>>> nth('abcde', 3) 1577ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot'd' 1578ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 1579ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot>>> nth('abcde', 9) is None 1580ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team RobotTrue 1581ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 1582ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot>>> quantify(xrange(99), lambda x: x%2==0) 1583ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot50 1584ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 1585ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot>>> a = [[1, 2, 3], [4, 5, 6]] 1586ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot>>> flatten(a) 1587ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot[1, 2, 3, 4, 5, 6] 1588ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 1589ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot>>> list(repeatfunc(pow, 5, 2, 3)) 1590ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot[8, 8, 8, 8, 8] 1591ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 1592ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot>>> import random 1593ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot>>> take(5, imap(int, repeatfunc(random.random))) 1594ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot[0, 0, 0, 0, 0] 1595ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 1596ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot>>> list(pairwise('abcd')) 1597ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot[('a', 'b'), ('b', 'c'), ('c', 'd')] 1598ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 1599ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot>>> list(pairwise([])) 1600ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot[] 1601ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 1602ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot>>> list(pairwise('a')) 1603ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot[] 1604ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 1605ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot>>> list(islice(padnone('abc'), 0, 6)) 1606ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot['a', 'b', 'c', None, None, None] 1607ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 1608ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot>>> list(ncycles('abc', 3)) 1609ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot['a', 'b', 'c', 'a', 'b', 'c', 'a', 'b', 'c'] 1610ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 1611ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot>>> dotproduct([1,2,3], [4,5,6]) 1612ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot32 1613ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 1614ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot>>> list(grouper(3, 'abcdefg', 'x')) 1615ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot[('a', 'b', 'c'), ('d', 'e', 'f'), ('g', 'x', 'x')] 1616ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 1617ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot>>> list(roundrobin('abc', 'd', 'ef')) 1618ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot['a', 'd', 'e', 'b', 'f', 'c'] 1619ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 1620ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot>>> list(powerset([1,2,3])) 1621ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot[(), (1,), (2,), (3,), (1, 2), (1, 3), (2, 3), (1, 2, 3)] 1622ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 1623ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot>>> all(len(list(powerset(range(n)))) == 2**n for n in range(18)) 1624ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team RobotTrue 1625ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 1626ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot>>> list(powerset('abcde')) == sorted(sorted(set(powerset('abcde'))), key=len) 1627ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team RobotTrue 1628ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 1629ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot>>> list(unique_everseen('AAAABBBCCDAABBB')) 1630ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot['A', 'B', 'C', 'D'] 1631ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 1632ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot>>> list(unique_everseen('ABBCcAD', str.lower)) 1633ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot['A', 'B', 'C', 'D'] 1634ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 1635ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot>>> list(unique_justseen('AAAABBBCCDAABBB')) 1636ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot['A', 'B', 'C', 'D', 'A', 'B'] 1637ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 1638ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot>>> list(unique_justseen('ABBCcAD', str.lower)) 1639ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot['A', 'B', 'C', 'A', 'D'] 1640ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 1641ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot""" 1642ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 1643ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot__test__ = {'libreftest' : libreftest} 1644ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 1645ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robotdef test_main(verbose=None): 1646ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot test_classes = (TestBasicOps, TestVariousIteratorArgs, TestGC, 1647ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot RegressionTests, LengthTransparency, 1648ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot SubclassWithKwargsTest, TestExamples) 1649ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot test_support.run_unittest(*test_classes) 1650ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 1651ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot # verify reference counting 1652ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot if verbose and hasattr(sys, "gettotalrefcount"): 1653ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot import gc 1654ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot counts = [None] * 5 1655ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot for i in xrange(len(counts)): 1656ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot test_support.run_unittest(*test_classes) 1657ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot gc.collect() 1658ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot counts[i] = sys.gettotalrefcount() 1659ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot print counts 1660ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 1661ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot # doctest the examples in the library reference 1662ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot test_support.run_doctest(sys.modules[__name__], verbose) 1663ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot 1664ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robotif __name__ == "__main__": 1665ec1a0b3abe08fb9a3952e8f48231cda1f6d9b1fandroid-build-team Robot test_main(verbose=True) 1666