[issue37022] pdb: do_p and do_pp swallow exceptions from __repr__

[Rémi Lapeyre]

Rémi Lapeyre <remi.lapeyre at henki.fr> added the comment:

This part of the code is already used in three places and your patch would add two occurrences of of it, I think it would be great to put the part that print the exception in a private method, to avoid duplicating it all over the place.

Doing this seems small enough to me that I think it could be done in the same PR to avoid the overhead of having two separates PRs.

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<https://bugs.python.org/issue37022>
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