[Python-Dev] Usage of += on strings in loops in stdlib

[Maciej Fijalkowski]

On Wed, Feb 13, 2013 at 8:24 PM, Brett Cannon <brett at python.org> wrote:
>
>
>
> On Wed, Feb 13, 2013 at 1:06 PM, Maciej Fijalkowski <fijall at gmail.com>
> wrote:
>>
>> On Wed, Feb 13, 2013 at 7:33 PM, MRAB <python at mrabarnett.plus.com> wrote:
>> > On 2013-02-13 13:23, Lennart Regebro wrote:
>> >>
>> >> On Wed, Feb 13, 2013 at 1:10 PM, Serhiy Storchaka <storchaka at gmail.com>
>> >> wrote:
>> >>>
>> >>> I prefer "x = '%s%s%s%s' % (a, b, c, d)" when string's number is more
>> >>> than 3
>> >>> and some of them are literal strings.
>> >>
>> >>
>> >> This has the benefit of being slow both on CPython and PyPy. Although
>> >> using .format() is even slower. :-)
>> >>
>> > How about adding a class method for catenation:
>> >
>> >     str.cat(a, b, c, d)
>> >     str.cat([a, b, c, d]) # Equivalent to "".join([a, b, c, d])
>> >
>> > Each argument could be a string or a list of strings.
>> >
>> >
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>>
>> I actually wonder.
>>
>> There seems to be the consensus to avoid += (to some extent). Can
>> someone commit the change to urrllib then? I'm talking about reverting
>> http://bugs.python.org/issue1285086 specifically
>
>
> Please re-open the bug with a comment as to why and I'm sure someone will
> get to it.

I can't re-open the bug, my account is kind of lame (and seriously,
why do you guys *do* have multiple layers of bug tracker accounts?)

Cheers,
fijal