Comparison with False - something I don't understand

[Paul Rubin]

Tim Harig <usernet at ilthio.net> writes:
> A friend was trying to derive a mathematical formula for determining
> the possibly distribution of results from rolling arbitrariy numbers
> of m n-sided dice

    http://en.wikipedia.org/wiki/Multinomial_distribution

> To generate a listing of all (non-uniq) possible roles, I would call
> the first dices increment method read and read the dice faces into a
> log until the first dice threw an exception that it could not be
> further incremented.  Then I would call reset() on the first dice and
> increment the second and so on much like the odometer of a car.

    from itertools import product
    m, n = 5, 2
    for roll in product(*(xrange(1,m+1) for i in xrange(n))):
       print roll