[pypy-issue] [issue814] Appending string is slower than cpython

[Benjamin Peterson]

It might be common behavior, but it's not a good idea or an idiom.
''.join() should be used everytime.

2011/7/28 Ismael <tracker at bugs.pypy.org>:
>
> Ismael <ismaelgfk at gmail.com> added the comment:
>
> Note that appending strings like this is "common behaviour" in
> CPython. Perhaps this difference in behaviour should be mentioned in
> the docs? Or in a special page for "performance Python"?
>
> On Thu, Jul 28, 2011 at 7:24 PM, Alex Gaynor <tracker at bugs.pypy.org> wrote:
>>
>> Alex Gaynor <alex.gaynor at gmail.com> added the comment:
>>
>> Not a bug, CPython has ridiculous hacks in it.  This operation would be O(n**2)
>> on CPython were it not for those, as it is on PyPy.  This won't be fixed.
>>
>> ----------
>> nosy: +agaynor
>> status: unread -> wontfix
>>
>> ________________________________________
>> PyPy bug tracker <tracker at bugs.pypy.org>
>> <https://bugs.pypy.org/issue814>
>> ________________________________________
>>
>
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-- 
Regards,
Benjamin