1"""Fix function attribute names (f.func_x -> f.__x__)."""
2# Author: Collin Winter
3
4# Local imports
5from .. import fixer_base
6from ..fixer_util import Name
7
8
9class FixFuncattrs(fixer_base.BaseFix):
10    BM_compatible = True
11
12    PATTERN = """
13    power< any+ trailer< '.' attr=('func_closure' | 'func_doc' | 'func_globals'
14                                  | 'func_name' | 'func_defaults' | 'func_code'
15                                  | 'func_dict') > any* >
16    """
17
18    def transform(self, node, results):
19        attr = results["attr"][0]
20        attr.replace(Name((u"__%s__" % attr.value[5:]),
21                          prefix=attr.prefix))
22