commit c42e7aa67ce72a6c4c6cdfe3b0929ca07556d444
author Eric V. Smith <ericvsmith@users.noreply.github.com> Sat Mar 24 23:02:21 2018 -0400
committer GitHub <noreply@github.com> Sat Mar 24 23:02:21 2018 -0400
tree 3fea955ff731373bbda606c434d3939592f1147b
parent 01d618c5606a239b03ad1269541eddb6e724775d

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

Lib/test/test_dataclasses.py

diff --git a/Lib/test/test_dataclasses.py b/Lib/test/test_dataclasses.py
index 8aff8ae..75e3cff 100755
--- a/Lib/test/test_dataclasses.py
+++ b/Lib/test/test_dataclasses.py
@@ -2667,7 +2667,7 @@
         # 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.