工厂方法模式

from abc import ABCMeta,abstractmethod
class PaymentFactory(metaclass=ABCMeta):
    @abstractmethod
    def create_payment(self):
        pass

class Payment(metaclass=ABCMeta):
    @abstractmethod
    def pay(self,money):
        pass

class Alipay(Payment):
    def pay(self, money):
        print(‘支付宝支付了%s元‘%money)

class Applepay(Payment):
    def pay(self, money):
        print(‘微信支付了%s元‘ %money)

class AlipayFactory(PaymentFactory):
    def create_payment(self):
        return Alipay()

class AppleFactory(PaymentFactory):
    def create_payment(self):
        return Applepay()

apple = AppleFactory()
apple.create_payment().pay(100)

alipay = AlipayFactory()
alipay.create_payment().pay(300)

#输出
# 微信支付了100元
# 支付宝支付了300元