On 23 Sep 2013 06:38, "Terry Reedy" <tjre...@udel.edu> wrote: > > On 9/22/2013 2:41 PM, Guido van Rossum wrote: >> >> On Sun, Sep 22, 2013 at 10:35 AM, Terry Reedy <tjre...@udel.edu >> <mailto:tjre...@udel.edu>> wrote: >> >> On 9/21/2013 10:30 PM, Guido van Rossum wrote: >> >> Exceptions in __del__ point to bugs (sometimes in the stdlib) that >> should be fixed, period. The only reason they do not result in >> exceptions that are properly bubbled up and catchable is because >> __del__ >> is called from a DECREF macro which has no return value. >> >> >> That is clear enough. What fooled me is the word 'ignored', in both >> the doc and message. How about 'skipped' (for technical reasons)? >> >> >> That's a good point, although I'm not sure 'skipped' is better. > > > Only slightly ;-). The problem with both words is that they try to say two things. What happened, and what Python did about it. > > >> Maybe use a more neutral verb like 'occurred'? > > > "Exception occurred in ..." is even better at say what happened. > > I think we should then add an explict statement as to what Python did, and hint at what the user should do, something like > "Although caught internally, it still indicates a problem."
Brevity is still a virtue. The relevant C API function is called "PyErr_WriteUnraisable", so just starting the message as something like "Unraisable exception suppressed in..." might work. Cheers, Nick. > > Otherwise, when no other output follows, as in > ... > > del c > Exception ocurred in: <bound method C.__del__ ... > > Traceback (most recent call last): > File "<pyshell#0>", line 2, in __del__ > AttributeError: > >>> > It may not be completely obvious to a non-expert that the traceback is not a 'real' traceback from an exception that was allowed to propagate, and that it did not stop execution and cannot be caught. > > > -- > Terry Jan Reedy > > _______________________________________________ > Python-Dev mailing list > Python-Dev@python.org > https://mail.python.org/mailman/listinfo/python-dev > Unsubscribe: https://mail.python.org/mailman/options/python-dev/ncoghlan%40gmail.com
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