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()