style: ensure trailing newlines

tests/unit/utils/test_human_readable_list.py

@@ -51,4 +51,4 @@ import pytest
     ([1, 2, 3, 42, 'a', 23], 'and', '\'', '\'1\', \'2\', \'3\', \'42\', \'a\' and \'23\''),
 ])
 def test_human_readable_list(ls, final_separator, quotation_mark, expected):
-    assert human_readable_list(ls, final_separator, quotation_mark) == expected
+    assert human_readable_list(ls, final_separator, quotation_mark) == expected