python怎么设置每隔几秒执行脚本？

#!/usr/bin/env python

import os,time

#how to run it?

#nohup python -u example.py >> /data/logs/example.log 2>&1 &

while True:

        os.system('command')//执行系统命令

        time.sleep(10)//推迟执行、休眠

#!/usr/bin/env python

import os,time,random

#how to run it?

#nohup python -u example.py >> /data/logs/example.log 2>&1 &

while True:

        sleeptime=random.randint(0, 10)//1-10随机数

        os.system('command')

        time.sleep(sleeptime)