建造者

创建一系列复杂对象

控制顺序

---

产品

class Player:
    def __init__(self, face=None, body=None, arm=None, leg=None):
        self.face = face
        self.body = body
        self.arm = arm
        self.leg = leg

    def __str__(self):
        return f'{self.face} {self.body} {self.arm} {self.leg}'

---

抽象建造者

class PlayerBuilder(metaclass=ABCMeta):
    @abstractmethod
    def build_face(self):
        pass

    @abstractmethod
    def build_body(self):
        pass

    @abstractmethod
    def build_arm(self):
        pass

    @abstractmethod
    def build_leg(self):
        pass

---

具体建造者

隐藏内部结构

女人

class SexGirlBuilder(PlayerBuilder):
    def __init__(self):
        self.player = Player()

    def build_face(self):
        self.player.face = '好看的脸'

    def build_body(self):
        self.player.body = '瘦小'

    def build_arm(self):
        self.player.arm = '漂亮胳膊'

    def build_leg(self):
        self.player.leg = '大腿'

怪物

class Monster(PlayerBuilder):
    def __init__(self):
        self.player = Player()

    def build_face(self):
        self.player.face = '怪物的脸'

    def build_body(self):
        self.player.body = '大身体'

    def build_arm(self):
        self.player.arm = '可怕胳膊'

    def build_leg(self):
        self.player.leg = '可怕大腿'

---

控制者

控制顺序 可以对构建过程更精细的控制

class PlayerDirector:
    def build_player(self, builder):
        builder.build_body()
        builder.build_face()
        builder.build_arm()
        builder.build_leg()
        return builder.player

---

客户端

builder = Monster()
director = PlayerDirector()
p = director.build_player(builder)
print(p)