name : fix_future_builtins.py """ Adds this import line: from builtins import XYZ for each of the functions XYZ that is used in the module. """ from __future__ import unicode_literals from lib2to3 import fixer_base from lib2to3.pygram import python_symbols as syms from lib2to3.fixer_util import Name, Call, in_special_context from libfuturize.fixer_util import touch_import_top # All builtins are: # from future.builtins.iterators import (filter, map, zip) # from future.builtins.misc import (ascii, chr, hex, input, isinstance, oct, open, round, super) # from future.types import (bytes, dict, int, range, str) # We don't need isinstance any more. replaced_builtins = '''filter map zip ascii chr hex input next oct open round super bytes dict int range str'''.split() expression = '|'.join(["name='{0}'".format(name) for name in replaced_builtins]) class FixFutureBuiltins(fixer_base.BaseFix): BM_compatible = True run_order = 9 # Currently we only match uses as a function. This doesn't match e.g.: # if isinstance(s, str): # ... PATTERN = """ power< ({0}) trailer< '(' args=[any] ')' > rest=any* > """.format(expression) def transform(self, node, results): name = results["name"] touch_import_top(u'builtins', name.value, node) # name.replace(Name(u"input", prefix=name.prefix))