[issue12029] Catching virtual subclasses in except clauses

[Martin Panter]

Martin Panter added the comment:

In the current (v4) patch, it looks like there is an unneeded “allow_new_exception” parameter that is always set to zero. So maybe the patch needs more careful thought.

Also I agree it needs documentation, what’s new, “changed in version 3.6”, etc.

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nosy: +martin.panter

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