python子类重写父类的抽象方法

概述#如何去模拟一个抽象基类#classCacheBase():#defget(self,key):#raiseNotImplementedError##defset(self,key,value):#raiseNotImplementedError###classRedisCache(CacheBase):#defset(self,key,value):#

# 如何去模拟一个抽象基类# class CacheBase():#     def get(self, key):#         raise NotImplementedError##     def set(self, key, value):#         raise NotImplementedError### class RedisCache(CacheBase):#     def set(self, key, value):#         print(111)### redis_cache = RedisCache()# redis_cache.set("key", "value")# 如果子类没有重写父类的抽象方法，在初始化的时候就报错import abcclass CacheBase(Metaclass=abc.ABCMeta):    @abc.abstractmethod    def get(self, key):        pass    @abc.abstractmethod    def set(self, key, value):        pass# class RedisCache(CacheBase):  # TypeError: Can't instantiate abstract class RedisCache with abstract methods get, set#     passclass RedisCache(CacheBase):  # TypeError: Can't instantiate abstract class RedisCache with abstract methods get, set    def set(self, key, value):        pass        print(111)    def get(self, key):        passredis_cache = RedisCache()redis_cache.set("key", "value")

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