""" Fixer that adds ``from past.builtins import basestring`` if there is a reference to ``basestring`` """ from lib2to3 import fixer_base from libfuturize.fixer_util import touch_import_top class FixBasestring(fixer_base.BaseFix): BM_compatible = True PATTERN = "'basestring'" def transform(self, node, results): touch_import_top(u'past.builtins', 'basestring', node)