On Sun, Nov 10, 2013 at 10:38:51AM -0800, Christopher Smith wrote:
>    Is the reason that you are mutliplying vars rather than using
>    combinations_with_replacements so you get the right numerical coefficient
>    in front? Isn't there, maybe, a simple function that would calculate these
>    coefficients so you don't have to keep growing the list? Or perhaps this
>    is just the simplest way to calculate the coefficient and it won't ever
>    take that much time or space to do so?
> 
>    Would it be better to initialize v = [] above the loop and then replace v
>    = vars*i with v.extend(vars)?

I've changed the code to use combinations_with_replacements().