[Tutor] Python execution timer/proficiency testing

[eryksun]

On Tue, Aug 27, 2013 at 2:18 AM, Steven D'Aprano <steve at pearwood.info> wrote:
> On Mon, Aug 26, 2013 at 08:20:30PM +0200, Dino Bektešević wrote:
>
>> Warning (from warnings module):
>>   File "/usr/lib/python2.7/dist-packages/scipy/optimize/minpack.py", line
>> 152
>>     warnings.warn(msg, RuntimeWarning)
>> RuntimeWarning: The iteration is not making good progress, as measured by
>> the improvement from the last ten iterations.
>>
>> It doesn't seem to produce any error in my data, but how dangerous is this?
>
> That's just telling you that your code is slow.
>
> I say "your code", but it might be scipy, numpy, or code you wrote
> yourself. Or it might simply be that the task you are trying to do is
> hard, and no matter what you do it will always be slow. I'm afraid that
> it will probably take a numpy/scipy expert to tell you which is the
> case.

The MINPACK routine called by fsolve() failed to converge; it quit
after making little or no progress over 10 consecutive iterations.
Maybe you need a better initial estimate; maybe there's no solution.