Lint fixes

yaml2ics.py

@@ -11,8 +11,8 @@
 import dateutil
 import dateutil.rrule
 import ics
-import yaml
 import requests
+import yaml
 from dateutil.tz import gettz
 
 interval_type = {
@@ -199,6 +199,7 @@ def files_to_calendar(files: list) -> ics.Calendar:
 
     return calendar
 
+
 # `main` is separate from `cli` to facilitate testing.
 # The only difference being that `main` raises errors while
 # `cli` prints them and exits with errorcode 1