中介者模式 python

class Infantry( object ):
    def __init__( self, mediator, name ):
        self.name = name
        self.mediator = mediator    

    def send( self, msg ):
        self.mediator.send( msg, self )

    def notify( self, msg ):
        print self.name + " get infomation: " + msg

class AirForce( object ):
    def __init__( self, mediator, name ):
        self.name = name
        self.mediator = mediator

    def send( self, msg ):
        self.mediator.send( msg, self )

    def notify( self, msg ):
        print self.name + " get infomation: " + msg

class Mediator( object ):

    soliders = []

    def send( self, msg, solider ):
        for s in self.soliders:
            if s != solider:
                s.notify( msg )

    def register( self, solider ):
        self.soliders.append( solider )

m  = Mediator()
t1 = Infantry( m, "Infantry-1" )
t2 = AirForce( m, "AirForce-1" )
t3 = AirForce( m, "AirForce-2" )

m.register( t1 )
m.register( t2 )
m.register( t3 )

t1.send( "I have found killer" )
t2.send( "Look at him" )
t3.send( "Be careful" )