trying to speed things up

Author: ekampf

graphql/execution/executor.py

@@ -435,11 +435,12 @@ def complete_list_value(exe_context, return_type, field_asts, info, result):
     item_type = return_type.of_type
     completed_results = []
     contains_promise = False
+
     index = 0
+    path = info.path[:]
     for item in result:
-        new_info = info.clone()
-        new_info.path += [index]
-        completed_item = complete_value_catching_error(exe_context, item_type, field_asts, new_info, item)
+        info.path = path + [index]
+        completed_item = complete_value_catching_error(exe_context, item_type, field_asts, info, item)
         if not contains_promise and is_thenable(completed_item):
             contains_promise = True