[Python-Dev] cProfile prints to stdout?

[Guido van Rossum]

On 2/25/06, skip at pobox.com <skip at pobox.com> wrote:
>
>     >> I just noticed that cProfile (like profile) prints to stdout.  Yuck.
>
>     Guido> Can you clarify? Why is it wrong to send the output of the
>     Guido> profiler to stdout?
>
> If the program emits a bunch of output of its own I want to keep it separate
> from what is arguably the debug output of the profiler (even though the
> profiler prints all its output at the end):
>
>     foo.py > /dev/null 2> foo.prof
>
>     Guido> It seems to make sense to me that you should be able to redirect
>     Guido> the profiler's output to a file with a simple ">file".
>
> It is currently impossible to separate profile output from the program's
> output.

It is if you use the "advanced" use of the profiler -- the profiling
run just saves the profiling data to a file, and the pstats module
invoked separately prints the output.

--
--Guido van Rossum (home page: http://www.python.org/~guido/)