Using the skeleton code provided, finish the code and make it a valid python script.
#!/usr/bin/env python
# skeleton.py

# TODO: Write code here...

if __name__ == "__main__":
    pass
#!/usr/bin/env python
# skeleton.py

def functionA():
    pass

def functionB():
    pass

def main():
    functionA()
    functionB()

if __name__ == "__main__":
    main()