How do I get time of a Python program's execution? How do I get time of a Python program's execution? python python

How do I get time of a Python program's execution?

The simplest way in Python:

import timestart_time = time.time()main()print("--- %s seconds ---" % (time.time() - start_time))

This assumes that your program takes at least a tenth of second to run.


--- 0.764891862869 seconds ---

I put this module into my own site-packages directory, and just insert import timing at the top of my module:

import atexitfrom time import clockdef secondsToStr(t):    return "%d:%02d:%02d.%03d" % \        reduce(lambda ll,b : divmod(ll[0],b) + ll[1:],            [(t*1000,),1000,60,60])line = "="*40def log(s, elapsed=None):    print line    print secondsToStr(clock()), '-', s    if elapsed:        print "Elapsed time:", elapsed    print line    printdef endlog():    end = clock()    elapsed = end-start    log("End Program", secondsToStr(elapsed))def now():    return secondsToStr(clock())start = clock()atexit.register(endlog)log("Start Program")

I can also call timing.log from within my program if there are significant stages within the program I want to show. But just including import timing will print the start and end times, and overall elapsed time. (Forgive my obscure secondsToStr function, it just formats a floating point number of seconds to hh:mm:ss.sss form.)

Note: A Python 3 version of the above code can be found here or here.

In Linux or Unix:

$ time python

In Windows, see this StackOverflow question: How do I measure execution time of a command on the Windows command line?

For more verbose output,

$ time -v python    Command being timed: "python3"    User time (seconds): 0.08    System time (seconds): 0.02    Percent of CPU this job got: 98%    Elapsed (wall clock) time (h:mm:ss or m:ss): 0:00.10    Average shared text size (kbytes): 0    Average unshared data size (kbytes): 0    Average stack size (kbytes): 0    Average total size (kbytes): 0    Maximum resident set size (kbytes): 9480    Average resident set size (kbytes): 0    Major (requiring I/O) page faults: 0    Minor (reclaiming a frame) page faults: 1114    Voluntary context switches: 0    Involuntary context switches: 22    Swaps: 0    File system inputs: 0    File system outputs: 0    Socket messages sent: 0    Socket messages received: 0    Signals delivered: 0    Page size (bytes): 4096    Exit status: 0