Ticket #10443: dt.diff

django/db/models/fields/__init__.py

@@ -534 +534 @@
         if '.' in value:
             try:
                 value, usecs = value.split('.')
+                tz = None
+                if '+' in usecs:
+                    usecs, tz = usecs.split('+')
+                elif '-' in usecs:
+                    usecs, tz = usecs.split('-')
                 usecs = int(usecs)
             except ValueError:
                 raise exceptions.ValidationError(