"""Fix function attribute names (f.func_x -> f.__x__)."""

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# Author: Collin Winter

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# Local imports

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from .. import fixer_base

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from ..fixer_util import Name

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class FixFuncattrs(fixer_base.BaseFix):

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BM_compatible = True

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PATTERN = """

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power< any+ trailer< '.' attr=('func_closure' | 'func_doc' | 'func_globals'

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| 'func_name' | 'func_defaults' | 'func_code'

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| 'func_dict') > any* >

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"""

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def transform(self, node, results):

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attr = results["attr"][0]

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attr.replace(Name((u"__%s__" % attr.value[5:]),

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prefix=attr.prefix))

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