light_control_3.py

def ask_user(prompt):
    if 'y' == input(prompt + " [y/n]: "):
        return True
    else:
        return False

light_on = None
is_dark = ask_user("Is it dark?")
is_sleepy = ask_user("Are you sleepy?")

if is_dark and not is_sleepy:
    light_on = True
    print("Switching on the light!")
else:
    light_on = False
    print("Switching off the light!")