3 files changed, 3 insertions, 3 deletions
diff --git a/django/template/base.py b/django/template/base.py
index 778d82be55..13037c31aa 100644
--- a/django/template/base.py
+++ b/django/template/base.py
@@ -639,7 +639,7 @@ filter_raw_string = r"""
  )""" % {
     'constant': constant_string,
     'num': r'[-+\.]?\d[\d\.e]*',
-    'var_chars': "\w\.",
+    'var_chars': r'\w\.',
     'filter_sep': re.escape(FILTER_SEPARATOR),
     'arg_sep': re.escape(FILTER_ARGUMENT_SEPARATOR),
 }
diff --git a/django/template/defaultfilters.py b/django/template/defaultfilters.py
index e3dc48e474..b258cf269b 100644
--- a/django/template/defaultfilters.py
+++ b/django/template/defaultfilters.py
@@ -259,7 +259,7 @@ def stringformat(value, arg):
 def title(value):
     """Converts a string into titlecase."""
     t = re.sub("([a-z])'([A-Z])", lambda m: m.group(0).lower(), value.title())
-    return re.sub("\d([A-Z])", lambda m: m.group(0).lower(), t)
+    return re.sub(r"\d([A-Z])", lambda m: m.group(0).lower(), t)
 
 
 @register.filter(is_safe=True)
diff --git a/django/template/defaulttags.py b/django/template/defaulttags.py
index ece6f7501d..71fcbbaab3 100644
--- a/django/template/defaulttags.py
+++ b/django/template/defaulttags.py
@@ -1329,7 +1329,7 @@ def templatetag(parser, token):
 
 @register.tag
 def url(parser, token):
-    """
+    r"""
     Return an absolute URL matching the given view with its parameters.
 
     This is a way to define links that aren't tied to a particular URL