Any better way to generate a tuple of all possible tuples in form of (x1,y1,x2,y2)?

Question

I want to generate a tuple of tuple in form of ((x1,y1,x2,y2),...(x1,y1,x2,y2)) where x1,y1,x2,y2 are all in range of (0,8).

Is there any other way rather than the following?

S = list()
for x1 in range(0, 8):
    for y1 in range(0, 8):
        for x2 in range(0, 8):
            for y2 in range(0, 8):
                S.append([x1,y1,x2,y2])
S = tuple(S)       

thanks

Answer 1

tuple([x1, y1, x2, y2] for x1 in range(0, 8) for x2 in range(0, 8) for y1 in range(0, 8) for y2 in range(0, 8))

Or

import itertools
a = [range(0,8)]*4
print tuple(itertools.product(*a))

Note that this returns a tuple of tuples. If you need a tuple of lists, use tuple(itertools.imap(list, itertools.product(*a))).