Traceback (most recent call last):
File "python", line 5, in
NameError: name 'yes' is not defined

Replace this line with your code. 
def shut_down(s):
    return s

if yes():
    shut_down("Shutting down")
elif no():
    shut_down("Shutdown aborted")


The example in the left column is just a reminder of syntax, your program should have a different design. Please read careful and start again


thank you. I have already passed it.