Profiling once active/enabled cannot be deactivated/disabled

[milindsmart]

In my script, I use profiling to keep track:

if __name__ == '__main__':
    pr = Profile()
    pr.enable()
    #...
    #My code
    #...
    pr.disable()
    s = io.StringIO()
    sortby = pstats.SortKey.CUMULATIVE
    ps = pstats.Stats(pr, stream=s).sort_stats(sortby)
    ps.print_stats()
    ps.dump_stats("../run.prof")

If I encounter an error and this script doesn't run to completion, and I try to run again (after fixing the problem but that's not required here), I encounter this error at the pr.enable() line.

ValueError: Another profiling tool is already active

At this point, even if I run pr.disable() or even del pr, this error never goes away. The only thing that works is to restart the kernel itself.

Is this a bug? Is this a bad practice that I should not do (if so, what's the standard practice?)?

[milindsmart]

Okay I skipped a couple of steps and hence may have filed this in the wrong location - I'm following the Spyder troubleshooting guide and I first got it in Spyder. Then I tried qtconsole and got the error there as well, which is why I opened this issue.

But just now I tried it in IPython and again got the error. So now I ran it in the Python interpreter using exec(open('mainrunner.py').read()) and still get the same problem - the profiling state cannot be disabled, reset, removed or anything else seemingly. Obviously running an entirely different instance of Python with python mainrunner.py does not show this problem.

What should I do? It feels like I'm doing something wrong here.