Small things, good article but you could do these things
You can use os to clear the screen instead like
os.system('clear') which clears the screen
For the typewriter there is an inbuilt argument in your print statement so instead of running sys.stdout.flush() you can just print(char, end='', flush=True)
Intead of running whille_back_to_menu = True you can just run while back_to_menu which is true so it will loop alternatively you can run while 1: which is True and you add a break statement to the if action1 == 'hello' block.