matrix multiplication

[Seb]

On Sun, 25 Feb 2018 18:52:14 -0500,
Terry Reedy <tjreedy at udel.edu> wrote:

[...]

> numpy has a matrix multiply function and now the '@' matrix multiply
> operator.

Yes, but what I was wondering is whether there's a faster way of
multiplying each row (1x3) of a matrix by another matrix (3x3), compared
to looping through the matrix row by row as shown in the code.  Perhaps
I'm not understanding how to use the broadcasting features of `matmul`.

-- 
Seb