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Sun Nov 5 23:14:59 EST 2017 · https://mail.python.org/pipermail/python-dev/2017-November/150187.html

On Nov 5, 2017, at 18:05, Nick Coghlan <ncoghlan at gmail.com> wrote:

> So my proposal is simple (and not really new): let's revert back to
> the way things were in 2.6 and earlier, with DeprecationWarning being
> visible by default

+1

> As part of this though, I'd suggest amending the documentation for
> DeprecationWarning [1] to specifically cover how to turn it off
> programmatically (`warnings.simplefilter("ignore",
> DeprecationWarning)`), at the command line (`python -W
> ignore::DeprecationWarning ...`), and via the environment
> (`PYTHONWARNINGS=ignore::DeprecationWarning`).

+1

I’d also consider adding convenient shortcuts for each of these.  I think DeprecationWarning is special enough to warrant it.  Possibly:

warnings.silence_deprecations()
python -X silence-deprecations
PYTHONSILENCEDEPRECATIONS=x

Cheers,
-Barry

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[Python-Dev] Proposal: go back to enabling DeprecationWarning by default