Python Day 21?面向?qū)ο?(面向?qū)ο蟮娜筇匦?#xff08;二）繼承，多態(tài)，封裝，幾個(gè)裝飾器函數(shù))

https://mubu.com/doc/1AqL_M0IbW

繼承之鉆石繼承

多態(tài)

封裝

幾個(gè)裝飾器函數(shù)

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@classmethod 可以通過(guò)類使用被裝飾的方法
@staticmethod 可以使用類.方法調(diào)用,而且不需要將self作為參數(shù)傳進(jìn)去 class MyFlies:__file_name="log"# @classmethoddef open_file(cls,filename):print(cls.__file_name)with open(filename,"rb") as f:return f.read()@staticmethoddef look_file(filename):print("根本不知道__file_name的存在")with open(filename,"rb") as f:return f.read()def self_open_file(self,filename):print(self.__file_name)with open(filename, "rb") as f:return f.read()new_file = MyFlies() print(new_file.open_file('log')) print(MyFlies.open_file('log')) # print(new_file.look_file("mylog.log")) # print(new_file.open_file("mylog.log")) # print(new_file.self_open_file("mylog.log")) # print(MyFlies.open_file("mylog.log")) # print(MyFlies.look_file("mylog.log")) @classmethod @staticmethod

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轉(zhuǎn)載于:https://www.cnblogs.com/eailoo/p/9100845.html

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