Python计时器倒计时 [英] Python timer countdown

问题描述

我想了解Python中的计时器。

I want to know about timer in Python.

假设我有一个类似以下代码段：

Suppose i have a code snippet something like:

def abc()
   print 'Hi'  
   print 'Hello'
   print 'Hai'

我想每1秒钟打印一次。最多三遍；即；第一秒我需要检查printf，第二秒我也需要检查第三秒。

And i want to print it every 1 second. Max three times;ie; 1st second i need to check the printf, 2nd second I need to check as well in 3rd second.

在我的实际代码变量中，值将被更新。
我需要捕获所有变量的更新时间。

In my actual code variables value will be updated. I need to capture at what second all the variables are getting updated.

有人可以告诉我该怎么做。

Can anybody tell me how to do this.

推荐答案

使用 time.sleep 。

import time

def abc():
    print 'Hi'
    print 'Hello'
    print 'Hai'

for i in xrange(3):
    time.sleep(1)
    abc()   

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