In [18]: l1=[1,3,5,7,9]
In [19]: l2=[0,2,4,6,8]
In [20]: [(x,y) for x in l1 for y in l2]
Out[20]:
[(1, 0),
(1, 2),
(1, 4),
(1, 6),
(1, 8),
(3, 0),
(3, 2),
(3, 4),
(3, 6),
(3, 8),
(5, 0),
(5, 2),
(5, 4),
(5, 6),
(5, 8),
(7, 0),
(7, 2),
(7, 4),
(7, 6),
(7, 8),
(9, 0),
(9, 2),
(9, 4),
(9, 6),
(9, 8)]