html_diff: Add missing mypy import.

It's getting really annoying that this isn't checked by our linter.
This commit is contained in:
Tim Abbott
2017-10-12 00:13:58 -07:00
parent 66a3f514d4
commit 5435fbf6c6

View File

@@ -1,5 +1,5 @@
from typing import Callable, List, Tuple, Text
from typing import Callable, List, Optional, Tuple, Text
from django.conf import settings