commit d663549a6a2c50450ba51f393ed6855181a36a9e
author Miss Islington (bot) <31488909+miss-islington@users.noreply.github.com> Tue Dec 12 10:49:18 2017 -0800
committer Serhiy Storchaka <storchaka@gmail.com> Tue Dec 12 20:49:18 2017 +0200
tree afc92661a308056de81834bbb458e031138caaee
parent 3b9173d33adc2903e1af461214333b0052d7b1e9

Fix improper use of re.escape() in tests. (GH-4814) (#4817)

(cherry picked from commit b748e3b2586e44bfc7011b601bce9cc6d16d89f1)

Lib/test/test_re.py

diff --git a/Lib/test/test_re.py b/Lib/test/test_re.py
index 174c5ca..ae31484 100644
--- a/Lib/test/test_re.py
+++ b/Lib/test/test_re.py
@@ -58,7 +58,7 @@
 
         s = r"\1\1"
         self.assertEqual(re.sub('(.)', s, 'x'), 'xx')
-        self.assertEqual(re.sub('(.)', re.escape(s), 'x'), s)
+        self.assertEqual(re.sub('(.)', s.replace('\\', r'\\'), 'x'), s)
         self.assertEqual(re.sub('(.)', lambda m: s, 'x'), s)
 
         self.assertEqual(re.sub('(?P<a>x)', '\g<a>\g<a>', 'xx'), 'xxxx')