Python时间测量功能 [英] Python time measure function

问题描述

我想创建一个python函数来测试在每个函数中花费的时间，并打印它的时间，如何打印函数名称，如果有另一种方式，请告诉我

I want to create a python function to test the time spent in each function and print its name with its time, how i can print the function name and if there is another way to do so please tell me

def measureTime(a):
    start = time.clock() 
    a()
    elapsed = time.clock()
    elapsed = elapsed - start
    print "Time spent in (function name) is: ", elapsed

推荐答案

首先，我强烈建议您使用 profiler 或至少使用 timeit 。

First and foremost, I highly suggest using a profiler or atleast use timeit.

然而，如果你想编写自己的计时方法严格地学习，这里是某个地方开始使用装饰器。

However if you wanted to write your own timing method strictly to learn, here is somewhere to get started using a decorator.

def timing(f):
    def wrap(*args):
        time1 = time.time()
        ret = f(*args)
        time2 = time.time()
        print '%s function took %0.3f ms' % (f.func_name, (time2-time1)*1000.0)
        return ret
    return wrap

，只需使用@timing装饰器：

And the usage is very simple, just use the @timing decorator:

@timing
def do_work():
  #code

注意我正在调用 f.func_name 在Python 3中获取函数名作为字符串（在Python 2中）或 f .__ name __ 。

Note I'm calling f.func_name to get the function name as a string(in Python 2), or f.__name__ in Python 3.

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