Sum function

# This function returns the list with the greater sum
def greater_sum(first, second):
    greater = first         # Setting the base of the comparison
    if sum(first) < sum(second): # The condition
        greater = second
    return greater

print(greater_sum([1, 2, 3], [1, 2, 4]))
print(greater_sum([4, 5], [2, 6, 3]))
print(greater_sum([1], []))
print(greater_sum([1, 2, 9], [1, 2, 5]))

# [1, 2, 4]
# [2, 6, 3]
# [1]
# [1, 2, 9]