如何测量python中代码行之间的时间? [英] How to measure time taken between lines of code in python?

问题描述

因此，在Java中，我们可以如何测量函数执行所需的时间

So in Java, we can do How to measure time taken by a function to execute

但是如何在python中完成呢?要测量代码行之间的时间开始和结束时间? 这样做的事情:

But how is it done in python? To measure the time start and end time between lines of codes? Something that does this:

import some_time_library

starttime = some_time_library.some_module()
code_tobe_measured() 
endtime = some_time_library.some_module()

time_taken = endtime - starttime

推荐答案

如果要测量CPU时间，可以使用

If you want to measure CPU time, can use time.process_time() for Python 3.3 and above:

import time
start = time.process_time()
# your code here    
print(time.process_time() - start)

第一个电话打开计时器，第二个电话告诉您已经过去了几秒钟.

First call turns the timer on, and second call tells you how many seconds have elapsed.

还有一个功能time.clock()，但自弃用了，因为Python 3.3 ，并将在Python 3.8中删除.

There is also a function time.clock(), but it is deprecated since Python 3.3 and will be removed in Python 3.8.

有更好的性能分析工具，例如timeit和profile，但是time.process_time()可以测量CPU时间，这就是您要问的问题.

There are better profiling tools like timeit and profile, however time.process_time() will measure the CPU time and this is what you're are asking about.

如果要测量挂钟时间，请使用time.time().

If you want to measure wall clock time instead, use time.time().

这篇关于如何测量python中代码行之间的时间?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！