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How do you raise and split ExceptionGroups manually?

Q: How do you raise and split ExceptionGroups manually?

Raise with `ExceptionGroup(msg, excs)` or `BaseExceptionGroup`; split with `eg.split(Type)` into (matched, rest) or `except*` sugar. One raise, many errors split / except* | | Method | Result | |---|---|---| | `raise ExceptionGroup` | Bundle many | One raise carries all | | `except* T` | Handle T subgroup | Non-T auto re-raised | | `eg.split(T)` | `(matched, rest)` tuple | Manual handling | | `eg.subgroup(T)` | Only matched | Filter view | Use `eg.split()` when you need to handle some and re-raise the rest programmat

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Constructing, catching, and splitting exception groups outside asyncio.

exceptionsexceptiongroupasyncio

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Raise with ExceptionGroup(msg, excs) or BaseExceptionGroup; split with eg.split(Type) into (matched, rest) or except* sugar.

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