fixed formatting (#1096)

tests/test_datetime_utils.py

@@ -1,4 +1,5 @@
 from datetime import date, timezone
+
 import pytest
 
 from osxphotos.datetime_utils import *
@@ -93,4 +94,4 @@ def test_datetime_utc_to_local_2():
     tz = datetime.timezone(offset=datetime.timedelta(seconds=7200))
     utc = datetime.datetime(2020, 9, 1, 19, 0, 0, tzinfo=datetime.timezone.utc)
     dt = datetime_utc_to_local(utc)
-    assert dt == datetime.datetime(2020, 9, 1, 21, 0, 0, tzinfo=tz)
+    assert dt == datetime.datetime(2020, 9, 1, 21, 0, 0, tzinfo=tz)