On Sun, Apr 6, 2014 at 11:13 PM, Benjamin Peterson <benjamin@python.org>wrote:
I believe this leaves only one open question, which is where exactly to stick the new matmul slots into PyTypeObject. This is the kind of fiddly detail that can easily be settled later if the PEP is accepted, though.
I don't see what it shouldn't be in PyNumberMethods. Surely, we're not going to get a flood of requests for more matrix operators, are we? :)
We may want to introduce say PyArrayMethods even if we don't introduce more array operators. We can populate that struct with array-specific alternatives for PySequence/PyMappingMethods and eliminate the need for dynamically created array types to allocate those. There is also a way to introduce PyArrayMethods at no cost to current implementation: we can rename tp_reserved (formerly known as tp_compare) to tp_as_array.