from lib2to3 import fixer_base from lib2to3.fixer_util import Name, BlankLine class FixAltUnicode(fixer_base.BaseFix): PATTERN = """ func=funcdef< 'def' name='__unicode__' parameters< '(' NAME ')' > any+ > """ def transform(self, node, results): name = results['name'] name.replace(Name('__str__', prefix=name.prefix))