[Python-ideas] Displaying DeprecationWarnings in the interactive interpreter, second try

[M.-A. Lemburg]

On 28.05.2015 02:29, Nathaniel Smith wrote:
> Hi all,
> 
> I'm tired of getting bug reports like this one:
> 
>   https://github.com/numpy/numpy/issues/5919

Well, in that particular case, I think numpy should raise a TypeError
instead of a DeprecationWarning :-)

> where the issue is just that the user didn't see deprecation warnings,
> so I just filed a bug report requesting that the interactive Python
> REPL start printing DeprecationWarnings when users use deprecated
> functionality:
> 
>   https://bugs.python.org/issue24294

+1 on the general idea, but I think this needs some more thought
on the topic of how you detect an interactive session that's being
used by a user.

You wouldn't want these warning to show up when piping in commands
to a Python interpreter.

In eGenix PyRun we use sys.stdin.isatty() to check whether we
want an interactive prompt or not. I guess the same could be done
here.

-- 
Marc-Andre Lemburg
eGenix.com

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