add cross build shell script

guowenxue

2021-08-17 544f75c5398469af0aaaa4aead0b09edd7a93099

 modules/python/sht20.py

old mode 100644
new mode 100755
@@ -1,4 +1,6 @@
#!/usr/bin/python
#-*- coding: utf-8 -*-

import fcntl
import time
import unittest