[Python-Dev] PEP 565: Show DeprecationWarning in __main__

Chris Angelico rosuav at gmail.com
Mon Nov 13 06:37:46 EST 2017

On Mon, Nov 13, 2017 at 9:46 PM, Antoine Pitrou <solipsis at pitrou.net> wrote:
> On Sun, 12 Nov 2017 19:48:28 -0800
> Nathaniel Smith <njs at pobox.com> wrote:
>> On Sun, Nov 12, 2017 at 1:24 AM, Nick Coghlan <ncoghlan at gmail.com> wrote:
>> > This change will lead to DeprecationWarning being displayed by default for:
>> >
>> > * code executed directly at the interactive prompt
>> > * code executed directly as part of a single-file script
>> Technically it's orthogonal, but if you're trying to get better
>> warnings in the REPL, then you might also want to look at:
>> https://bugs.python.org/issue1539925
>> https://github.com/ipython/ipython/issues/6611
> Depends what you call "better".  Personally, I don't want to see
> warnings each and every time I use a deprecated or questionable
> construct or API from the REPL.

Isn't that the entire *point* of warnings? When you're working at the
REPL, you're the one in control of which APIs you use, so you should
be the one to know about deprecations.


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