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What is except* and ExceptionGroup in Python 3.11+?

Q: What is except* and ExceptionGroup in Python 3.11+?

`ExceptionGroup` bundles multiple exceptions (from TaskGroup or manual `raise ExceptionGroup`); `except*` matches and extracts compatible sub-exceptions, leaving the rest. except: first only except*: all matching | | except | except* | |---|---|---| | Matches | First matching exception | All matching sub-exceptions | | With ExceptionGroup | Catches group as one | Unwraps and handles per type | | Multiple types | Need nested try | `except* A` + `except* B` chain | | Introduced | Always | 3.11 (PEP 654) | It's the miss

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PEP 654 — handling multiple unrelated exceptions together.

exceptionsexcept-starpython3.11

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ExceptionGroup bundles multiple exceptions (from TaskGroup or manual raise ExceptionGroup); except* matches and extracts compatible sub-exceptions, leaving the rest.

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