Hello,
I have often been annoyed by the lack of tracebacks given in warning
messages. Something, I have even replaced a warning with an exception,
just such that I could get a useful traceback.
Using the warnings and traceback modules, it is possible to display a
traceback with a warning message. This will of course make the output of
warnings a lot more verbose. The warning messages might also be more
easily confused with error messages. So I'm not convinced that we should
do this by default.
But we could certainly do this in the doctester (see #21191 for that).
This would already be quite useful, the disadvantages do not really seem
to apply in that case. The only issue is that warnings would look
different in interactive usage and in doctests. But this is already the
case for exception messages (IPython formats them in a different way).
What do you think?
Jeroen.
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