On Wed, Jul 29, 2009 at 9:24 PM, <pdlem...@earthlink.net> wrote: <snip> > But I can't figure out where it gets "cmath". Searching the Python > directory reveals no more than a test_cmath. The only cmath I can find > is a header file in another directory turboc++\Borland\include\ > > dir(cmath) reveals 23 functions overlapping the 37 functions of > the math module. > > What is cmath, where did it come from and how does it differ from > the standard math module ?
It's a module in the standard library: http://docs.python.org/library/cmath.html 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. Cheers, Chris -- http://blog.rebertia.com -- http://mail.python.org/mailman/listinfo/python-list
