[x for x in range(1,45) if not [y for y in range(2,x) if x % y == 0]]
output:
[1, 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43]
[x for x in range(1,45) if not [y for y in range(2,x) if x % y == 0]]
output:
[1, 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43]