python sleep函数 随机

 

随机sleep

sleeptime=random.randint(0, 300)

   time.sleep(sleeptime)

以下为转载Http://hi.baidu.com/liuhelishuang/item/1f8cd8f75bd246dd6325d28c

#!/usr/bin/env python

import os
import time

def fun(name):
    write_name="command %s failed!\n" % name
    print write_name
    f = open('/tmp/cs.log','a')
    f.write(write_name)
    f.close()

def tary(name):
    print "the command is %s" % name
    command_id = os.system(name)
    while command_id != 0:
        fun(name)
        time.sleep(10)
        command_id = os.system(name)

time.sleep(5)

tary("reboot")

 

Python 编程中使用 time 模块可以让程序休眠

 

具体方法是time.sleep(秒数)，其中“秒数”以秒为单位，可以是小数，0.1秒则代表休眠100毫秒。

# 例1：循环输出休眠1秒
import time
i = 1
while i <= 3:
    print i # 输出i
    i += 1
    time.sleep(1) # 休眠1秒

# 例1：循环输出休眠100毫秒
import time
i = 1
while i <= 3:
    print i # 输出i
    i += 1
    time.sleep(0.1) # 休眠0.1秒