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Sun Oct 2 19:27:46 CEST 2011 · http://mail.python.org/pipermail/python-dev/2011-October/113802.html

On Sun, Oct 2, 2011 at 7:23 PM, Simon Cross
<hodgestar+pythondev at gmail.com> wrote:
> I'm -1 on hacking += to be fast again because having the two loops
> below perform wildly differently is *very* surprising to me:
>
> s = ''
> for x in loops:
>    s += x
>
> s = ''
> for x in loops:
>    s = s + x

Erk. Bad example. Second example should be:

s = ''
for x in loops:
   b = s
   s += x

(I misunderstood the details but I new the reference counting
hackiness would lead to surprises somewhere :).

Schiavo
Simon

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[Python-Dev] RFC: Add a new builtin strarray type to Python?