[Python-Dev] Re: PEP 654: Exception Groups and except* [REPOST]

While we're talking about compelling use cases, does anyone have an actual, concrete use case for the proposed "except *" feature that's strong enough to justify new syntax? I'm fine with having ExceptionGroup as a built-in type. I'm not fine with adding new syntax that will apparently be used only in rare circumstances. Can code that's aware of the possibility of getting an ExceptionGroup not simply catch it as a normal exception and then pick it apart? Do we really need a whole new piece of machinery for this? -- Greg