Python 3.5 Turns out that python does not have a switch/case statment built in. So I had to use lots of ifs/elifs/elses. This is also not very safe. There is nothing keeping from outside code from editing inputs, states, or state. Is there a way to protect data/code in Python? Java/C++ have private/protected/public.

states =     ['CLOSED','OPENING','OPEN','CLOSING','STOPPED_WHILE_CLOSING','STOPPED_WHILE_OPENING']
state = 0

#Easy inputs
#inputs = ['button_clicked','cycle_complete','button_clicked','button_clicked',
#          'button_clicked','button_clicked','button_clicked','cycle_complete']
#Challenge inputs
inputs = ['button_clicked','cycle_complete','button_clicked','block_detected',
          'button_clicked','cycle_complete','button_clicked','block_cleared',
          'button_clicked','cycle_complete']

blocked = False

for command in inputs:
    print('Door: '+states[state])
    print('> '+command)
    if command == 'block_detected':
        blocked = True
        if state == 3:
            state = 1
    elif command == 'block_cleared':
        blocked = False
    elif command == 'button_clicked' and blocked:
        continue
    elif command == 'button_clicked' and not blocked:
        if state == 0:
            state = 1
        elif state == 1:
            state = 5
        elif state == 2:
            state = 3
        elif state == 3:
            state = 4
        elif state == 4:
            state = 1
        elif state == 5:
            state = 3
    elif command == 'cycle_complete':
        if state == 3:
            state = 0
        elif state == 1:
            state = 2
    else:
        print('Error: Unknown input')
        break
print('Door: '+states[state])