diff --git a/common/conf_check.py b/common/conf_check.py
new file mode 100644
index 0000000000000000000000000000000000000000..8bad7b3e889170561f7a370824c213234626a73b
--- /dev/null
+++ b/common/conf_check.py
@@ -0,0 +1,3 @@
+# -*- coding:utf-8 -*-
+#!/usr/bin/env python
+# cython:language_level=3
\ No newline at end of file