本文主要是介绍python子类重写父类的抽象方法,对大家解决编程问题具有一定的参考价值,需要的程序猿们随着小编来一起学习吧!
# 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 abc
class 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
# pass
class 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):
pass
redis_cache = RedisCache()
redis_cache.set("key", "value")
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