open python file window you see an editor in which you can type the example code type the following code into the window -pressing enter after each linemystack [stacksize def displaystack()print("stack currently contains:"for item in mystackprint(itemdef push(value)if len(mystackstacksizemystack append(valueelseprint("stack is full!"def pop()if len(mystack mystack pop(elseprint("stack is empty "push( push( push( displaystack(input("press any key when ready "push( displaystack(input("press any key when ready "pop(displaystack(input("press any key when ready "pop(pop(pop(displaystack(