[Python-Dev] Usage of += on strings in loops in stdlib (original) (raw)
Amaury Forgeot d'Arc amauryfa at gmail.com
Wed Feb 13 15:27:31 CET 2013
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2013/2/13 Lennart Regebro <regebro at gmail.com>
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. :-)
Did you really try it? PyPy is really fast with str.mod, when the format string is a constant. Yes, it's jitted.
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