fix flake8

scriptworker/utils.py

@@ -595,6 +595,7 @@ def add_enumerable_item_to_dict(dict_, key, item):
         dict_ (dict): the dict to modify
         key (str): the key to add the item to
         item (whatever): The item to add to the list associated to the key
+
     """
     if isinstance(item, (list, tuple)):
         try:
@@ -620,6 +621,7 @@ def remove_empty_keys(values, remove=({}, None, [], 'null')):
 
     Returns:
         values (dict/list): a dict or list copy, with empty keys removed.
+
     """
     if isinstance(values, dict):
         return {key: remove_empty_keys(value, remove=remove)