what do you mean by pattern matching in python 3? the only thing that sounds similar is (nested) iterable unpacking: (a, (b, c)) = foo() (fst, *middle, las

what do you mean by pattern matching in python 3? the only thing that sounds similar is (nested) iterable unpacking: (a, (b, c)) = foo() (fst, *middle, last) = foo() which is nice but i wouldn't really call it pattern matching because i can't do something like match xs: when (): ... when (x, *rest): ... i.e. do different things based on the shape of the data.