gistfile1.py

from itertools import combinations

# in is the number of dimensions of the cube (3 for a 3d cube)
def generate_vertices(n):
    for number_of_ones in xrange(0, n + 1):
        for location_of_ones in combinations(xrange(0,n), number_of_ones):
            location_of_ones = set(location_of_ones)
            yield [1 if i in location_of_ones else 0 for i in xrange(0, n) ]

for vertex in generate_vertices(3):
    print vertex

# result:
# [0, 0, 0]
# [1, 0, 0]
# [0, 1, 0]
# [0, 0, 1]
# [1, 1, 0]
# [1, 0, 1]
# [0, 1, 1]
# [1, 1, 1]