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

Brian Curtin brian at python.org
Sat Feb 25 03:05:33 CET 2012

On Feb 24, 2012 6:26 PM, "Mark Lawrence" <breamoreboy at yahoo.co.uk> wrote:

On 24/02/2012 21:37, "Martin v. Löwis" wrote:

I was of the thought that Old String Formatting |"%s" % foo| was to be phased out by Advanced String Formatting |"{}.format(foo)|. This is actually not the case, and never was. Some people would indeed like to see that happen, and others are strongly opposed. As a consequence, both APIs for formatting will coexist for a long time to come (ten years at least); no deprecation is planned. Regards, Martin Quoting the docs http://docs.python.org/py3k/library/stdtypes.html 4.6.2. Old String Formatting Operations Note The formatting operations described here are obsolete and may go away in future versions of Python. Use the new String Formatting in new code. I think this is daft because all of the code has to be supported for the ten years that MVL has suggested. I suggest a plan that says something like:- Until Python 3.5 both methods of string formatting will be supported. In Python 3.6 the the old formating style will be deprecated. In Python 3.7 the old style is dead. I'm fully aware that it isn't likely to be that easy, I'm simply trying to spark ideas from the core developers and users who are in a far better situation to judge this situation than I am.

-infinity. We can't do that as outlined earlier in the thread. -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://mail.python.org/pipermail/python-dev/attachments/20120224/8740ab3e/attachment.html>

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