fix some linter errors

.gitlab-ci.yml

@@ -7,7 +7,7 @@ linter:
   - python3 -V
   - uname -a
   - apt install -y sqlite3 locales-all git python3-flask python3-ldap3 python3-requests python3-lxml python3-icalendar python3-mysql.connector python3-requests python3-coverage pylint3
-  - pylint3 --indent-string='\t' --indent-after-paren=1 --max-line-length=160 --docstring-min-length=9999 --output-format=text *.py | tee pylint.txt
+  - pylint3 --indent-string='\t' --indent-after-paren=1 --max-line-length=160 --disable=missing-docstring,unused-wildcard-import --output-format=text *.py | tee pylint.txt
   artifacts:
       paths:
       - pylint.txt

sorter.py

@@ -152,7 +152,7 @@ def sort_file(filename, course=None, lectures=None):
 	matches = filter_lectures_by_datetime(lectures, data.get('date'), data.get('time'))
 	# if we can't match exactly  based on date and time, we have to match keywords
 	if ((len(matches) != 1) and (len(data['keywords']) > 0)):
-		if not len(matches) == 0:
+		if not matches:
 			# only test lectures with the correct date/time, if we have any
 			matches = filter_lectures_by_keywords(matches, data['keywords'])
 		else: