[Python-Dev] Status regarding Old vs. Advanced String Formating (original) (raw)

Nick Coghlan ncoghlan at gmail.com
Fri Feb 24 18:09:48 CET 2012

On Sat, Feb 25, 2012 at 2:41 AM, Benjamin Peterson <benjamin at python.org> wrote:

2012/2/24 Tshepang Lekhonkhobe <tshepang at gmail.com>:

Hi,

I was of the thought that Old String Formatting |"%s" % foo| was to be phased out by Advanced String Formatting |"{}.format(foo)|. I however keep seeing new code committed into the main VCS using the old style. Is this okay? Is there a policy? I ask also because I expect CPython to lead by example. Using either is fine I think. It doesn't hurt anyone to have old string formatting around for a long time. In general, +0 for using new string formatting.

Yep. Also, the two can work nicely in tandem as templates for each other that don't need tons of escaping.

On another note, will the old format ever be deprecated? Is there a date? I doubt it.

If the old format were ever to be deprecated (and that's a very big if), Python 4k would be the earliest it could happen. More likely the old format will just hang around indefinitely, though.

Cheers, Nick.

-- Nick Coghlan   |   ncoghlan at gmail.com   |   Brisbane, Australia

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