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

[Lennart Regebro]

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. :-)

//Lennart