On Thu, Jul 30, 2009 at 3:10 AM, Steven D'Aprano<ste...@remove.this.cybersource.com.au> wrote: > On Wed, 29 Jul 2009 21:34:07 -0700, Chris Rebert wrote: > >> The difference is that it handles complex numbers, whereas the plain >> "math" module doesn't. >> I would guess the reason there are separate modules is for performance, >> so as to avoid having to dispatch on type at runtime. But this is only a >> guess. > > My understanding is that it is to avoid people who don't care about > complex numbers being confused when math.sqrt(-1) returns 1j instead of > raising an error.
That seems a better and more plausible rationale than my guess. Kudos. - Chris -- http://blog.rebertia.com -- http://mail.python.org/mailman/listinfo/python-list
