Ticket #17892: resolver_repr.diff

django/core/urlresolvers.py

@@ -232 +232 @@
         self._app_dict = {}
 
     def __repr__(self):
-        return smart_str(u'<%s %s (%s:%s) %s>' % (self.__class__.__name__, self.urlconf_name, self.app_name, self.namespace, self.regex.pattern))
+        # lists can be huge and it can take a lot of time
+        # to call __repr__ on them
+        # use just a __class__ name instead
+        if isinstance(self.urlconf_name, list):
+            urlconf_name_repr = repr(self.urlconf_name.__class__)
+        else:
+            urlconf_name_repr = repr(self.urlconf_name)
+        return smart_str(u'<%s %s (%s:%s) %s>' % (self.__class__.__name__, urlconf_name_repr, self.app_name, self.namespace, self.regex.pattern))
 
     def _populate(self):
         lookups = MultiValueDict()