# A robot encounters a door. If the door is locked, the robot
# should be instructed to turn around.  If instead the door is
# unlocked, the robot should be instructed to open the door and
# enter the room. Note, before entering the robot should determine
# whether the light is off. If it is off, the robot should be
# instructed to first turn on the light.

# Get status of the door
reply = input( 'Door (locked / unlocked): ' )

# Put in standard format -- all lowercase
door_sensor = reply.strip().lower()

print()

# Based on door sensor take action
if ( door_sensor == 'locked' ) :  # if the door is locked
    # Cannot enter -- the door is locked
    # must turn around
    print( 'turn around' )

    # pass   -- keyword - like a placeholder so your code doesn't blow up when you don't have code yet

else :  # if the door is not locked (unlocked)
    # We can go in
    # open the door
    print( 'open door' )

    # Need to get status of light sensor - ask the user
    reply = input('Light on/off: ')

    # Put in standard format -- all lowercase
    light_sensor = reply.strip().lower()

    if ( light_sensor == 'off' ):
        # Can enter because the door is open and the light is on
        print( 'turn on the light' )

    # if the light was off, we've turned on the light, and then we enter the room as well

    # if the light is on, we enter the room
    print( 'Enter the room' )  # we enter the room whether the light was already on, or it was off but then we
                               # we turned it on in the if statement on line 36

# All done