def main():
    print('==Exercise 4==')

    # Create a tuple containing a sequence of numbers 
    tuplex = (4, 6, 2, 8, 3, 1)
    # Print the contents of the 'tuplex' tuple
    print(tuplex)

    t_o = (*tuplex,999)

    print(f"Modified tuple: {t_o}")

    print('==End Of Ex4==')
    return 0

if __name__ == '__main__':
    main()