bpo-42128: Structural Pattern Matching (PEP 634) by brandtbucher · Pull Request #22917 · python/cpython
PEP 634 has now been accepted, and we'd like to get this into the next alpha.
Several people have volunteered to review the implementation, since it's so huge. Other reviews are very welcome, if anybody has a bit of time to pitch in. This touches tons of stuff: the parser, the compiler, the VM, the builtins, the stdlib, the tests... I'd like as many eyeballs as possible!