[Python-checkins] Fix invalid escape sequence: use raw string. (GH-6225)

[Eric V. Smith]

https://github.com/python/cpython/commit/c42e7aa67ce72a6c4c6cdfe3b0929ca07556d444
commit: c42e7aa67ce72a6c4c6cdfe3b0929ca07556d444
branch: master
author: Eric V. Smith <ericvsmith at users.noreply.github.com>
committer: GitHub <noreply at github.com>
date: 2018-03-24T23:02:21-04:00
summary:

Fix invalid escape sequence: use raw string. (GH-6225)

files:
M Lib/test/test_dataclasses.py

diff --git a/Lib/test/test_dataclasses.py b/Lib/test/test_dataclasses.py
index 8aff8ae140a5..75e3cffc4a5e 100755
--- a/Lib/test/test_dataclasses.py
+++ b/Lib/test/test_dataclasses.py
@@ -2667,7 +2667,7 @@ class C:
         # There was a bug where a variable in a slot was assumed
         #  to also have a default value (of type types.MemberDescriptorType).
         with self.assertRaisesRegex(TypeError,
-                                    "__init__\(\) missing 1 required positional argument: 'x'"):
+                                    r"__init__\(\) missing 1 required positional argument: 'x'"):
             C()
 
         # We can create an instance, and assign to x.