[issue45292] Implement PEP 654: Exception Groups

[Irit Katriel]

Irit Katriel <iritkatriel at gmail.com> added the comment:

The PR adds two new opcodes. Let's start with the simpler of the two - JUMP_IF_NOT_EG_MATCH.   This is the exception-group variation on JUMP_IF_NOT_EXC_MATCH.

JUMP_IF_NOT_EXC_MATCH checks for a match by checking if the exception is of the given type. The result is boolean.

JUMP_IF_NOT_EG_MATCH checks for a matching by calling .split() on the exception group. The result is two exception groups (the matching part and the non-matching part).

Can we do this without a new opcode?

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