python 类对象和实例对象动态添加方法

 class Person():
     def __init__(self, name):
         self.name = name
 
 def print_name(self):
     print(self.name)
 
 p = Person('Li')
 import types
 p.print_name = types.MethodType(print_name, p)    # 绑定函数到对象
 p.print_name()
 
 @staticmethod
 def print_abc():
     print('abc')
 
 Person.print_abc = print_abc
 Person.print_abc()
 
 @classmethod
 def print_123(cls):
     print('')
 
 Person.print_123 = print_123
 Person.print_123()