Update execute.py

execute.py

@@ -36,7 +36,8 @@ def check_correctness(check_program, output, timeout, task_id, completion_id):
     :param completion_id: an optional completion ID so we can match
         the results later even if execution finishes asynchronously.
     """
-    result = []
+    manager = multiprocessing.Manager()
+    result = manager.list()
     unsafe_execute(check_program, output, result, timeout)
 
     if not result: