Python question

[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.lussier at comcast.net>wrote:

> "Thomas Charron" <twaffle at 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.
> --
> Seeya,
> Paul
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>
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