On Tuesday 28 October 2003 08:24 pm, Fernando Perez wrote: > Hi all, > > I just wanted to add a small comment on this discussion, which I'd been > following via the newsgroup mirror. Thanks for your comments! I didn't even know we HAD an ng mirror... > Python is picking up a lot of steam in the scientific computing community, > and in science it is quite common to encounter non-commutative > multiplication. Just to remind Guido from his old math days :), even for > square matrices, AB!=BA in most cases. The Matrix class supplied with Yes, of course, you're right. However, the most specific problem is: do you know of ANY use cases where A*x and x*A should give different results, or the former should succeed and the latter should fail, *when x is an integer*? If you can find any use case for that, even in an obscure branch of maths, then clearly the urgency of fixing this bug goes WAY up. Otherwise -- if having the problem specifically for an integer x ONLY should not affect anything -- the bug is basically only going to show up in software that's under development and not yet completed, or else not fully correct. I _still_ want to fix it, but... the urgency of doing so is going to be different, as I'm sure you'll understand! Thanks again for your help -- we DO need to hear from users!!! Alex
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