product

from itertools import product
list1 = list(input())
list2 = list(input())
result = product(list1, list2)
for item in result:
    print(item, end=" ")

/Library/Frameworks/Python.framework/Versions/3.4/bin/python3.4 /Users/mona/PycharmProjects/PythonCodes/cartesian_product.py
2 4
3 5
('2', '3') ('2', ' ') ('2', '5') (' ', '3') (' ', ' ') (' ', '5') ('4', '3') ('4', ' ') ('4', '5')
Process finished with exit code 0