How to determine if printing is being a bottleneck in my code?
Roy Smith
roy at panix.com
Tue Dec 4 21:36:35 EST 2012
In article <29c74a30-f017-44b5-8a3d-a3c0d659277d at googlegroups.com>,
SherjilOzair <sherjilozair at gmail.com> wrote:
> Hello list,
>
> When it comes to printing things while some computation is being done, there
> are 2 extremes.
>
> 1. printing speed is slower than data-to-print generation speed. In this
> case, printing is a bottleneck. Examples: "for i in xrange(2**30): print i".
> Without the print, this code would be much faster.
>
> 2. data-to-print generation speed is slower than printing speed. So, this
> case, printing does now slow you down much. Example: for m in matrices: print
> m.inverse() # inverse is a time-taking function
>
> These two cases are pretty easy. But, my question is, how to draw the line?
> How do I know that print is slowing me down, and I should probably remove
> some of them? Is there a scientific way to do this, rather than just
> intuition and guesswork?
>
> I can clarify, if needed.
> Thanks,
> Sherjil Ozair
The profiler (http://docs.python.org/2/library/profile.html) is your
friend.
More information about the Python-list
mailing list