On Tuesday, Jan 13th 2009 at 11:39 -0000, quoth Shawn O'Shea:
=>time.time() returns the number of seconds since the epoch, so end-start =>should be the number of seconds of execution. For example, given the =>following program timetest.py: =>import time => =>start=time.time() => =>time.sleep(5) => =>end=time.time() => =>print end-start => =>The output should very close to 5 seconds (with some overhead for the =>recording of start and end). =>$ python timetest.py =>5.00017285347 => =>If you are doing timing of code, you may also want to consider the timeit =>module (part of the standard library): =>http://docs.python.org/library/timeit.html => =>-Shawn => => =>On Tue, Jan 13, 2009 at 10:41 AM, Paul Lussier <p.luss...@comcast.net> =>wrote: => "Thomas Charron" <twaf...@gmail.com> writes: => => > Example: => > => >>>> strftime("HH:MM:SS ", localtime()) => > '14:17:15' => =>Ah, I see. So, if I do this: => => >>> begin = time.time() => [... long wait here ... ] => >>> end = time.time() => >>> time.strftime("%H:%M:%S", time.localtime(end - begin)) => '19:16:07' => =>so, the MM:SS are correct, but the 19 for hours is incorrect. It =>should be 00, because "long wait here" was 16:07. => => >>> end - begin => 967.31416082382202 => >>> time.localtime(end - begin) => (1969, 12, 31, 19, 16, 7, 2, 365, 0) => =>So far, it seems my best bet is to do the math on the difference =>between end, begin myself; something like this: => => def ElapsedTime (time): => """Convert a float into HH:MM:SS string""" => => days = time / 60 / 60 / 24 => => if days < 1: => days = 0 => => mins = int(time / 60) => if mins > 60: => hours = int(mins / 60) => mins = int(time % 60) => else: => hours = 0 => => secs = int(((time % 60) - int(mins)) * 60) => => days = (days < 10) and ("0%s" % days) or days => hours = (hours < 10) and ("0%s" % hours) or hours => mins = (mins < 10) and ("0%s" % mins ) or mins => secs = (secs < 10) and ("0%s" % secs ) or secs => => return "%s:%s:%s:%s" % (days, hours, mins, secs) => =>I'm certainly appreciative of better ways to do this :) => =>Thanks.Guys, don't use time! Use the datetime interface I previously described. That's what it was made for. :-)
#! /usr/bin/python import datetime import time then = datetime.datetime.now() print "then = ", then time.sleep(5) now = datetime.datetime.now() print "now = ", now print "Elapsed = ", now - then -- steveo at syslang dot net TMMP1 http://frambors.syslang.net/ Do you have neighbors who are not frambors? Steven W. Orr
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