Add comment to code

server/api/utils.py

@@ -46,6 +46,12 @@ def get_graphql_query(filename):
 
 
 def get_graphql_mutation(filename):
+    """
+    Get the GraphQL mutation from the mutation directory
+    :param filename: the filename of the mutation
+    :return: the mutation
+    """
+
     from django.conf import settings
 
     with io.open(os.path.join(settings.GRAPHQL_MUTATIONS_DIR, filename)) as f: