list_comprehensions_1.py

[ print([x,y]) for x in [1,2,3,4] for y in [5,6,7,8] ]

"""
[1, 5]
[2, 5]
[3, 5]
[4, 5]
[1, 6]
[2, 6]
[3, 6]
[4, 6]
[1, 7]
[2, 7]
[3, 7]
[4, 7]
[1, 8]
[2, 8]
[3, 8]
[4, 8]
"""


[ print([x,y]) for x in xs for y in ys if x == 1 ]

"""
[1, 5]
[1, 6]
[1, 7]
[1, 8]
"""