[Python-Dev] Proposal: go back to enabling DeprecationWarning by default (original) (raw)

Eric V. Smith eric at trueblade.com
Mon Nov 6 19:44:03 EST 2017

On 11/6/2017 1:12 PM, Barry Warsaw wrote:

On Nov 5, 2017, at 20:47, Nick Coghlan <ncoghlan at gmail.com> wrote:

warnings.silencedeprecations() python -X silence-deprecations PYTHONSILENCEDEPRECATIONS=x It could be interesting to combine this with Tim's suggestion of putting an upper version limit on the silencing, so the above may look like: warnings.ignoredeprecations((3, 7)) python -X ignore-deprecations=3.7 PYTHONIGNOREDEPRECATIONS=3.7 That could be cool as long as we also support wildcards, e.g. defaults along the lines of my suggestions above to ignore everything.

I'd like to see a command line or environment variable that says: "turn on deprecation warnings (and/or pending deprecation warnings), but do not show warnings for this list of modules (possibly regex's)".

Like: PYTHONDEPRECATIONWARNINGSEXCEPTFOR=PIL,requests.*

Then I'd just turn it on for all modules (empty string?), and when I got something that was flooding me with output I'd add it to the list.

Eric.

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