Python 抽象工厂方法

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import abcclass AbstractEnemyFactory( object ):    __metaclass__ = abc.ABCMeta    @abc.abstractmethod    def createNinja( self, name ):            pass    @abc.abstractmethod    def createSwordsman( self, name ):            passclass LowLevelEnemyFactory( AbstractEnemyFactory ):    def createNinja( self, name ):            return LowLevelEnemyNinja( name = name )    def createSwordsman( self, name ):            return LowLevelEnemySwordsman( name = name )class HighLevelEnemyFactory( AbstractEnemyFactory ):    def createNinja( self, name ):            return HighLevelEnemyNinja( name )    def createSwordsman( self, name ):            return HighLevelEnemySwordsman( name )class EnemyNinja( object ):    __metaclass__ = abc.ABCMeta    @abc.abstractmethod    def ninjutsu_attack( self ):            passclass LowLevelEnemyNinja( EnemyNinja ):    def __init__( self, name = 'LowLevelEnemyNinja' ):            self._name = name            self._chakra = 100            self._attack_power = 5            self._speed = 10    def ninjutsu_attack( self ):            print 'Ninja use ninjutsu.'            print '[%s]: my chakra is %s and the power of attack is %s'\                    %( self._name, self._chakra, self._attack_power )class HighLevelEnemyNinja( EnemyNinja ):    def __init__( self, name = 'HighLevelEnemyNinja' ):            self._name = name            self._chakra = 300            self._attack_power = 15            self._speed = 20    def ninjutsu_attack( self ):            print 'Ninja use ninjutsu.'            print '[%s]: my chakra is %s and the power of attack is %s'\                    %( self._name, self._chakra, self._attack_power )    def special_effect( self ):            print '[%s]: special effect!'%( self._name )class EnemySwordsman( object ):        __metaclass__ = abc.ABCMeta    @abc.abstractmethod    def swords_attack( self ):            passclass LowLevelEnemySwordsman( EnemySwordsman ):    def __init__( self, name = 'LowLevelEnemySwordsman' ):            self._name = name            self._blood = 100            self._attack_power = 5            self._speed = 10    def swords_attack( self ):            print 'Swordsman use swords.'            print '[%s]: my blood is %s and the power of attack is %s'\                    %( self._name, self._blood, self._attack_power )    class HighLevelEnemySwordsman( EnemySwordsman ):    def __init__( self, name = 'HighLevelEnemySwordsman' ):            self._name = name            self._blood = 300            self._attack_power = 30            self._speed = 30    def swords_attack( self ):            print 'Swordsman use swords.'            print '[%s]: my blood is %s and the power of attack is %s'\                    %( self._name, self._blood, self._attack_power )    def special_effect( self ):            print '[%s]: special effect!'%( self._name )if __name__ == '__main__':    h = HighLevelEnemyFactory()    ninja = h.createNinja( name = 'Scheme' )    ninja.ninjutsu_attack()    ninja.special_effect()    swordsman = h.createSwordsman( name = 'Lambda' )    swordsman.swords_attack()    swordsman.special_effect()
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