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class base(object): def login(self): raise notimplementederror("子类没有实现该方法") # notimplementederror 没有实现的错误 class normal(base): def login(self): pass class member(base): def denglu(self): pass class admin(base): def login(self): pass # 项目经理总入口 def login(obj): print("准备验证码...") obj.login() print("进入主页...") n = normal() m = member() a = admin() login(n) login(m) # 报错 login(a)
from abc import abcmeta, abstractmethod class base(metaclass=abcmeta): @abstractmethod def login(self): pass class normal(base): def login(self): pass class member(base): def denglu(self): pass class admin(base): def login(self): pass n = normal() n.login() m = member() # 报错 can't instantiate abstract class member with abstract methods login m.login() a = admin() a.login()
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