Isn't PEP 643 for PEG grammar pattern matching? (I'm talking about switch statements in Python)
I think you are referring to PEP 634, the one I linked to. I suggest you read it (and the other link I sent). I copy from PEP 636, marked as a sort of "tutorial" for PEP 634: ``` A match statement takes an expression and compares its value to successive patterns given as one or more case blocks. This is superficially similar to a switch statement in C, Java or JavaScript (and many other languages), but much more powerful. The simplest form compares a subject value against one or more literals: def http_error(status): match status: case 400: return "Bad request" case 404: return "Not found" case 418: return "I'm a teapot" case _: return "Something's wrong with the Internet" ``` - DLD