[Python-Dev] PEP 465: A dedicated infix operator for matrix multiplication

[Greg Ewing]

Alexander Belopolsky wrote:
> We can start by reviewing the reasons for having separate 
> PyNumber/PySequence/PyMappingMethods structures.  I believe that one of 
> the reasons is that many types need to allocate only one of the three.

That much is probably true.

>  Numpy arrays, IIRC, allocate all three.  A dedicated PyArrayMethods 
> struct can replace some if not all of these allocations.

I don't see how. NumPy arrays allocate all three because
they override just about every method in existence. Adding
another struct isn't going to eliminate the need for the
existing ones.

-- 
Greg