【Python】接口定义及实现
一、无返回值
#!/usr/bin/env python # -*- coding: utf-8 -*- """ @Time : @Author : @File : @Version :1.0 @Function: """ # 定义接口 class InterfaceRoot(object): def get_a(self): pass def get_b(self): pass def get_c(self): pass # 接口实现1 class Impl1InterfaceRoot(InterfaceRoot): def get_a(self): print("Impl1_a") def get_b(self): print("Impl1_b") # 接口实现2 class Impl2InterfaceRoot(InterfaceRoot): def get_a(self): print("Impl2_a") def get_b(self): print("Impl2_b") def get_c(self): print("Impl2_c") if __name__ == '__main__': print('Impl1InterfaceRoot 实现') Impl1InterfaceRoot().get_a() Impl1InterfaceRoot().get_b() Impl1InterfaceRoot().get_c() print('Impl2InterfaceRoot 实现') Impl2InterfaceRoot().get_a() Impl2InterfaceRoot().get_b() Impl2InterfaceRoot().get_c()
输出
Impl1InterfaceRoot 实现
Impl1_a
Impl1_b
Impl2InterfaceRoot 实现
Impl2_a
Impl2_b
Impl2_c
二、有返回值
-> 后面表示说明此方法的返回值(注释作用)
... 表示返回值可以有0个或多个
#!/usr/bin/env python # -*- coding: utf-8 -*- """ @Time : @Author : @File : @Version :1.0 @Function: """ # 定义接口 class InterfaceRoot(object): def get_a(self) -> int: ... def get_b(self) -> int: ... def get_c(self) -> int: ... # 接口实现1 class Impl1InterfaceRoot(InterfaceRoot): def get_a(self): print("Impl1_a") return '接口实现1 get_a 返回值' def get_b(self): print("Impl1_b") # 接口实现2 class Impl2InterfaceRoot(InterfaceRoot): def get_a(self): print("Impl2_a") def get_b(self): print("Impl2_b") def get_c(self): print("Impl2_c") if __name__ == '__main__': print('---------------------------------------Impl1InterfaceRoot 实现') print(Impl1InterfaceRoot().get_a()) Impl1InterfaceRoot().get_b() Impl1InterfaceRoot().get_c() print('---------------------------------------Impl2InterfaceRoot 实现') print(Impl2InterfaceRoot().get_a()) Impl2InterfaceRoot().get_b() Impl2InterfaceRoot().get_c()
输出:
---------------------------------------Impl1InterfaceRoot 实现
Impl1_a
接口实现1 get_a 返回值
Impl1_b
---------------------------------------Impl2InterfaceRoot 实现
Impl2_a
None
Impl2_b
Impl2_c
如果忍耐算是坚强 我选择抵抗 如果妥协算是努力 我选择争取