Fix deprecation warnings

Fix incomplete character escaping ``` deform/field.py:350: DeprecationWarning: invalid escape sequence \w deform/field.py:351: DeprecationWarning: invalid escape sequence \s ``` (cherry picked from commit 0efc284)
Pylons · Aug 22, 2020 · d80ef4e · d80ef4e
1 parent 5874983
commit d80ef4e
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/deform/field.py b/deform/field.py
@@ -424,8 +424,8 @@ def default_item_css_class(self):
             .encode("ascii", "ignore")
             .decode("ascii")
         )
-        css_class = re.sub("[^\w\s-]", "", css_class).strip().lower()  # noQA
-        css_class = re.sub("[-\s]+", "-", css_class)  # noQA
+        css_class = re.sub(r"[^\w\s-]", "", css_class).strip().lower()  # noQA
+        css_class = re.sub(r"[-\s]+", "-", css_class)  # noQA
         return "item-%s" % css_class
 
     def get_widget_requirements(self):