1"""Fixer that changes unicode to str, unichr to chr, and u"..." into "...". 2 3""" 4 5import re 6from ..pgen2 import token 7from .. import fixer_base 8 9_mapping = {u"unichr" : u"chr", u"unicode" : u"str"} 10_literal_re = re.compile(ur"[uU][rR]?[\'\"]") 11 12class FixUnicode(fixer_base.BaseFix): 13 BM_compatible = True 14 PATTERN = "STRING | 'unicode' | 'unichr'" 15 16 def transform(self, node, results): 17 if node.type == token.NAME: 18 new = node.clone() 19 new.value = _mapping[node.value] 20 return new 21 elif node.type == token.STRING: 22 if _literal_re.match(node.value): 23 new = node.clone() 24 new.value = new.value[1:] 25 return new 26