def bottles_of_beer(bob):
    """ Prints 99 Bottle
    of Beer on the
    Wall lyrics. :param bob: Must
    be a positive
    integer.
    """
    if bob < 1:
        print("""No more bottles of beer on the wall. No more bottles of beer.""")
        return

    tmp = bob
    bob -= 1
    print("""{} bottles of beer on the wall. {} bottles of beer. Take one down, pass it around, {} bottles of beer on the wall. """.format(tmp, tmp, bob))

    bottles_of_beer(bob)


bottles_of_beer(10)
