[Python-Dev] Deprecating string exceptions

[Martin v. Loewis]

Guido van Rossum <guido@python.org> writes:

> Can we safely make Exception (and hence all built-in exceptions) a
> new-style class?  This could break user code (even when we don't
> enforce that exceptions are derived from Exception).

I see no need to make such a change, with this change alone, I can't
see risks for breaking code, either.

If you would also make Exception.args a slot, there would be a
rationale (efficiency), but you would also more likely break user
code.

Regards,
Martin