From 6a725a0a52f44b7a84617bb3740836c9dcbebfc8 Mon Sep 17 00:00:00 2001
From: Anthony Sottile <asottile@umich.edu>
Date: Mon, 18 Jun 2018 06:25:07 +0000
Subject: [PATCH] Fix "invalid escape sequence" when running with -Werror

```
$ python3.7 -Werror
Python 3.7.0rc1 (default, Jun 16 2018, 03:32:08)
[GCC 5.4.0 20160609] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> '# noqa(?:: (?P<codes>([A-Z][0-9]+(?:[,\s]+)?)+))?'
  File "<stdin>", line 1
SyntaxError: invalid escape sequence \s
```
---
 src/flake8/defaults.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/flake8/defaults.py b/src/flake8/defaults.py
index 55cb48a..3ad959b 100644
--- a/src/flake8/defaults.py
+++ b/src/flake8/defaults.py
@@ -46,7 +46,7 @@ NOQA_INLINE_REGEXP = re.compile(
     # We do not care about the ``: `` that follows ``noqa``
     # We do not care about the casing of ``noqa``
     # We want a comma-separated list of errors
-    '# noqa(?:: (?P<codes>([A-Z][0-9]+(?:[,\s]+)?)+))?',
+    r'# noqa(?:: (?P<codes>([A-Z][0-9]+(?:[,\s]+)?)+))?',
     re.IGNORECASE
 )