1 # Copyright 2014 The Chromium Authors. All rights reserved. 2 # Use of this source code is governed by a BSD-style license that can be 3 # found in the LICENSE file. 4 5 """ 6 A 2to3 fixer that converts all string literals to use single quotes. 7 8 Strings that contain single quotes will not be modified. Prefixed string 9 literals will also not be modified. This affect double-quoted strings but 10 not triple-double-quote strings. 11 12 """ 13 14 from lib2to3.fixer_base import BaseFix 15 from lib2to3.pgen2 import token 16 17 18 class FixSingleQuoteStrings(BaseFix): 19 20 explicit = True 21 _accept_type = token.STRING 22 23 def match(self, node): 24 res = node.value.startswith('"') and not node.value.startswith('"""') and "'" not in node.value[1:-1] 25 return res 26 27 def transform(self, node, results): 28 node.value = node.value.replace('"', "'") 29 node.changed() 30
