Apparently the PEP authors decided to punt on what they call "algebraic matching" of repeated names. IMNSHO, if this PEP isn't doing algebraic matching then it's really far from clear what it's for, ...

Pattern matching (PM) was first introduced as the semiconductor industry began to shift from simple one-dimensional rule checks to the two-dimensional checks required by sub-resolution lithography.

Design patterns are proven solutions to common software design problems. They provide the correct and tested solution for what is often encountered while designing software applications. The ...

Not to mention python tends to prefer duck typing a lot and most of the examples are counter to that.