From f0ffa3f4ea277f9814285085fde20baff60fc386 Mon Sep 17 00:00:00 2001
From: Jon Dufresne <jon.dufresne@gmail.com>
Date: Sat, 30 Sep 2017 17:33:07 -0700
Subject: [PATCH] Refs #27025, #28593 -- Fixed "invalid escape sequence"
 warnings in urls/resolvers.py.

---
 django/urls/resolvers.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/django/urls/resolvers.py b/django/urls/resolvers.py
index b214264445..b41434f61c 100644
--- a/django/urls/resolvers.py
+++ b/django/urls/resolvers.py
@@ -119,7 +119,7 @@ class CheckURLMixin:
             # Skip check as it can be useful to start a URL pattern with a slash
             # when APPEND_SLASH=False.
             return []
-        if regex_pattern.startswith(('/', '^/', '^\/')) and not regex_pattern.endswith('/'):
+        if regex_pattern.startswith(('/', '^/', '^\\/')) and not regex_pattern.endswith('/'):
             warning = Warning(
                 "Your URL pattern {} has a route beginning with a '/'. Remove this "
                 "slash as it is unnecessary. If this pattern is targeted in an "
@@ -187,7 +187,7 @@ class RegexPattern(CheckURLMixin):
 
 
 _PATH_PARAMETER_COMPONENT_RE = re.compile(
-    '<(?:(?P<converter>[^>:]+):)?(?P<parameter>\w+)>'
+    r'<(?:(?P<converter>[^>:]+):)?(?P<parameter>\w+)>'
 )