Python time.sleep 精准延迟到秒

在Python3中，您可以使用time.sleep(seconds)使当前正在执行的Python程序进入睡眠或延迟几秒钟。

import time

time.sleep(1) # delays for 1 seconds

time.sleep(10) # delays for 10 seconds

time.sleep(60) # delays for 1 minute

time.sleep(3600) # delays for 1 hour

　完整的例子

   test_delay.py 　

import time    
def main():
    while True:
        print("DateTime " + time.strftime("%c"))
        time.sleep(1) # delays for 1 seconds
if __name__ == '__main__':
    main()

输出量

DateTime 09/22/15 18:03:42
DateTime 09/22/15 18:03:43
DateTime 09/22/15 18:03:44
DateTime 09/22/15 18:03:45
DateTime 09/22/15 18:03:46
DateTime 09/22/15 18:03:47
#...