[Python-Dev] Redirecting warnings.showwarning to logging
Vinay Sajip
vinay_sajip at yahoo.co.uk
Sun Nov 23 02:53:35 CET 2008
Sidnei da Silva <sidnei <at> enfoldsystems.com> writes:
> I do have one suggestion for improvement: instead of requiring the
> person to do this monkey patching, add a new 'log' action to the
> warnings filter as described by PEP 230 [1] (see: 'The Warnings
> Filter' section). This way, changing the behavior of how warnings are
> displayed (or not) is kept consistent and documented.
>
> [1] http://www.python.org/dev/peps/pep-0230/
>
I see from PEP-230 the following under "Rejected Concerns" stated by GvR:
"Paul Prescod, Barry Warsaw and Fred Drake have brought up several additional
concerns that I feel aren't critical. I address them here (the concerns are
paraphrased, not exactly their words):"
[other concerns omitted]
- Barry: I'd like to add my own warning action. Maybe if `action'
could be a callable as well as a string. Then in my IDE, I
could set that to "mygui.popupWarningsDialog".
Response: For that purpose you would override warnings.showwarning().
[other concerns omitted]
So, monkey-patching appears to be the suggested approach. Indeed, ISTM that the
showwarning function is there specifically for the purpose of being
monkey-patched out.
Regards,
Vinay Sajip
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