Python Timeit Module

Test the execution time of a piece of code. In Python there is a very easy way to use the Timeit module. Super easy to use.

The following is a description of a function in a Timeit module

These are mainly the two functions:

1, Timeit (stmt= ' Pass ', setup= ' pass ', timer=<defaulttimer>, number=1000000)

Return:

Returns the time, in seconds, that the code used to run the stmt number of times. Float type

Number of references:

stmt: The piece of code to run

Setup: The preparation of running code, not counting the time, usually import or the like

Timer: This under Win32 is Time.clock (), Linux is Time.time (), default, no tube

Number: How many times to run stmt

2, repeat (stmt= ' pass ', setup= ' pass ', timer=<defaulttimer>, repeat=3, number=1000000)

This function is more than the Timeit function of a repeat, indicating how many times the process of running Timeit repeatedly. Returns a list of times that are run each time

Of course. For convenience, Python also uses a Timer class. The function inside the timer class is the same as the two functions described above.

Class Timeit. Timer (stmt= ' Pass ', setup= ' pass ', Timer=<timer function>)

Timer.timeit (number=1000000)

Timer.repeat (repeat=3,number=1000000)

Understand, the same, when using which kind of convenient O (∩_∩) o

is equivalent to

Timeit (stmt= ' Pass ', setup= ' pass ', timer=<defaulttimer>, number=1000000)

= Timer (stmt= ' Pass ', setup= ' pass ', timer=<timerfunction>). Timeit (number=1000000)

Repeat (stmt= ' pass ', setup= ' pass ', timer=<defaulttimer>, repeat=3, number=1000000)

= Timer (stmt= ' Pass ', setup= ' pass ', timer=<timerfunction>). Repeat (repeat=3, number=1000000)

Let's look at a simple example below.

Import Timeitimport mathimport pprintdef myfun (): For    i in range:        for J in range (2, 10):            

The output is:

0.05253329430442725[0.04811309220489818, 0.04411143942591811, 0.04442468209438866, 0.04363309734529072, 0.0596289993101522]0.05972538166968161[0.052578808196427296, 0.047218431876859035, 0.0431364604649378, 0.040855411289408616, 0.04188750572270261]0.04400300979614258

In order to output beautiful, the use of Pprint this interesting module

Python Timeit Module