from itertools import product
lst1 = ["python", "java", "c++"]
lst2 = [1, 2, 3, 4]
for lst in list(product(lst1, lst2)):
print(lst)
'''
run:
('python', 1)
('python', 2)
('python', 3)
('python', 4)
('java', 1)
('java', 2)
('java', 3)
('java', 4)
('c++', 1)
('c++', 2)
('c++', 3)
('c++', 4)
'''