#145: Make small changes to date handler

common/date_handler.py

@@ -30,6 +30,7 @@ def is_str_a_date(potential_date):
         except ValueError:
             return False
 
+    @staticmethod
     def str_to_datetime_object(data):
         """
         Convert a string to a `datetime.datetime` object. This is commonly used when
@@ -64,9 +65,6 @@ def datetime_object_to_str(date_obj):
         """
         Convert a datetime object to a string so it can be outputted in JSON
 
-        There's currently no reason to make this function static, but it could be useful
-        in the future if a use case required this functionality.
-
         :param date_obj: Datetime object from data from an ICAT entity
         :type date_obj: :class:`datetime.datetime`
         :return: Datetime (of type string) in the agreed format