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copied!<p>I think its clear that nobody really understands your question. I would suggest putting it in context and making it shorter. As an example, here's one possible implementation of the state pattern in python, please study it to get an idea.</p> <pre><code>class State(object): def __init__(self, name): self.name = name def __repr__(self): return self.name class Automaton(object): def __init__(self, instance, start): self._state = start self.transitions = instance.transitions() def get_state(self): return self._state def set_state(self, target): transition = self.transitions.get((self.state, target)) if transition: action, condition = transition if condition: if condition(): if action: action() self._state = target else: self._state = target else: self._state = target state = property(get_state, set_state) class Door(object): open = State('open') closed = State('closed') def __init__(self, blocked=False): self.blocked = blocked def close(self): print 'closing door' def do_open(self): print 'opening door' def not_blocked(self): return not self.blocked def transitions(self): return { (self.open, self.closed):(self.close, self.not_blocked), (self.closed, self.open):(self.do_open, self.not_blocked), } if __name__ == '__main__': door = Door() automaton = Automaton(door, door.open) print 'door is', automaton.state automaton.state = door.closed print 'door is', automaton.state automaton.state = door.open print 'door is', automaton.state door.blocked = True automaton.state = door.closed print 'door is', automaton.state </code></pre> <p>the output of this programm would be:</p> <pre><code>door is open closing door door is closed opening door door is open door is open </code></pre>

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