1#!/usr/bin/python
2import re, sys
3
4def parse_file(filename):
5    data = {}
6    for line in open(filename):
7        if re.match('\d', line):
8            (samples, percent, symbol) = line.split()
9            data[symbol] = float(percent)
10    return data
11
12
13data1 = parse_file(sys.argv[1])
14data2 = parse_file(sys.argv[2])
15
16delta = {}
17for symbol in data1.keys() + data2.keys():
18    delta[symbol] = data1.get(symbol, 0) - data2.get(symbol, 0)
19
20def lookup_delta(symbol):
21    return delta[symbol]
22
23sorted_deltas = sorted(delta.keys(), key=lookup_delta, reverse=True)
24
25if len(sorted_deltas) > 40:
26    sorted_deltas = sorted_deltas[0:20] + sorted_deltas[-20:]
27
28for symbol in sorted_deltas:
29    print '%2.3f %s' % (delta[symbol], symbol)
30