On Tue, Jul 20, 2010 at 1:16 PM, Guido van Rossum <guido@python.org> wrote:
Given the large number of Python users familiar with SQL compared to
those familiar with Haskell, I think we'd do wise to pick a different
keyword instead of 'where'. I can't think of one right now though.

Taking a cue from mathematics, how about "given"? 

c = sqrt(a*a + b*b) given:
    a = retrieve_a()
    b = retrieve_b()
Daniel Stutzbach, Ph.D.
President, Stutzbach Enterprises, LLC