Pyhon 2.x or 3.x, which is faster?

[Mark Lawrence]

On 10/03/2016 13:08, Chris Angelico wrote:
>
> When people want better performance out of a number-crunching Python
> program, they have a few options. One is to rewrite their code in C or
> Fortran or something. Another is to make small tweaks so the bulk of
> the work is handled by numpy or Cython. A third is to keep their code
> completely unchanged, but run it under PyPy instead of whatever they
> were previously using (probably CPython). Generally, rewriting in
> C/Fortran is generally a bad idea; you pay the price over the whole
> application, when optimizing a small subset of it would give 99% of
> the performance improvement. That's why actual CPython byte-code
> interpretation performance isn't so critical; if we can change 5% of
> the code so it uses numpy, we keep 95% of it in idiomatic Python,
> while still having the bulk of the work done in Fortran. CPython has
> other priorities than performance - not to say that "slow is fine",
> but more that "slow and dynamic opens up possibilities that fast and
> static precludes, so we're happy to pay the price for the features we
> want".
>
> ChrisA
>

This should be the first option 
https://wiki.python.org/moin/PythonSpeed/PerformanceTips

-- 
My fellow Pythonistas, ask not what our language can do for you, ask
what you can do for our language.

Mark Lawrence