Excuse me if I post here. Maybe is a stupid question: why, instead of
introducing except*, Python can't extend the functionality of except,
so it can do what except* would do?
Good question. Here's an example:
```
try:
. . .
except OSError as err:
if err.errno != ENOENT:
raise
. . .
```
If this would catch ExceptionGroup(OSError), the `err` variable would be an ExceptionGroup instance, which does not have an `errno` attribute.
(Irit: Does the PEP answer this question? I couldn't quickly find it in the rejected ideas. I think it's a reasonable question and we should answer it, either in the Rationale or in Rejected Ideas.)