[Python-Dev] Matrix product (original) (raw)

Nick Coghlan ncoghlan at gmail.com
Thu Jul 31 15:51:42 CEST 2008

Sebastien Loisel wrote:

Dear Raymond,

Thank you for your email.

I think much of this thread is a repeat of conversations that were held for PEP 225: http://www.python.org/dev/peps/pep-0225/

That PEP is marked as deferred. Maybe it's time to bring it back to life. This is a much better PEP than the one I had found, and would solve all of the numpy problems. The PEP is very well thought-out.

A very interesting read! I wouldn't support some of the more exotic elements tacked on to the end (particularly the replacement of the now thoroughly entrenched bitwise operators), but the basic idea of providing ~op variants of several operators seems fairly sound. I'd be somewhat inclined to add ~not, ~and and ~or to the list even though that would pretty much force the semantics to be elementwise for the ~ variants (since the standard not, and and or are always objectwise and without PEP 335 there's no way for an object to change that).

Cheers, Nick.

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