"""Fixer that changes unicode to str, unichr to chr, and u"..." into "...".
"""
import re
from ..pgen2 import token
from .. import fixer_base
_mapping = {u"unichr" : u"chr", u"unicode" : u"str"}
_literal_re = re.compile(ur"[uU][rR]?[\'\"]")
class FixUnicode(fixer_base.BaseFix):
PATTERN = "STRING | 'unicode' | 'unichr'"
def transform(self, node, results):
if node.type == token.NAME:
new = node.clone()
new.value = _mapping[node.value]
return new
elif node.type == token.STRING:
if _literal_re.match(node.value):
new = node.clone()
new.value = new.value[1:]
return new
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