# -*- coding:UTF-8 -*-
import time
print time.strftime('%Y-%m-%d %H:%M:%S',time.localtime(time.time()))
time.sleep(1)
primt time.strftime('%Y-%m-%d %H:%M:%S',time.localtime(time.time()))
2017-06-28 14:46

2017-06-28 14:48

2017-06-28 14:49