[Python-Dev] Usage of += on strings in loops in stdlib (original) (raw)

Maciej Fijalkowski fijall at gmail.com
Wed Feb 13 19:27:38 CET 2013

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. > > _> ________________________ > Python-Dev mailing list > Python-Dev at python.org > http://mail.python.org/mailman/listinfo/python-dev > Unsubscribe: > http://mail.python.org/mailman/options/python-dev/fijall%40gmail.com 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

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