def hello_world(first_name, last_name):
    print("Hello ", end="")
    print(first_name, end=" ")
    print(last_name)

def hello_world(first_name, last_name):
    print("Hello ", end="")
    print(first_name, end=" ")
    print(last_name)

hello_world("Willie", "Wildcat")

def flip(first, last):
    temp = first
    first = last
    last = temp
    print(first)
    print(last)


def main():
    first = "Willie"
    last = "Wildcat"
    flip(first, last)
    print(first)
    print(last)


main()