On Fri, Jul 30, 2010 at 4:46 AM, Lawrence D'Oliveiro <l...@geek-central.gen.new_zealand> wrote: > Say a vector V is a tuple of 3 numbers, not all zero. You want to normalize > it (scale all components by the same factor) so its magnitude is 1. > > The usual way is something like this: > > L = math.sqrt(V[0] * V[0] + V[1] * V[1] + V[2] * V[2]) > V = (V[0] / L, V[1] / L, V[2] / L) > > What I don’t like is having that intermediate variable L leftover after the > computation. Here’s how to do it in one step:
I suppose you'd be a fan of the proposed "given"/"where" statement then (but its prognosis isn't great): http://www.python.org/dev/peps/pep-3150/ Cheers, Chris -- http://blog.rebertia.com -- http://mail.python.org/mailman/listinfo/python-list
