type动态创建类

Posted 2022-09-07 intruder

在一些特定场合，需要动态创建类，比如创建表单，就会用到type动态创建类，举个例子：

 1 class Person(object):
 2 
 3     def __init__(self,name,age):
 4         self.name = name
 5         self.age = age
 6 
 7 
 8 p = Person("aiden",22)
 9 print(type(p))
10 print(type(Person))
11 
12 
13 
14 def __init__(self,name,age):
15     self.name = name
16     self.age = age
17 
18 dog_class = type("Dog",(object,),"role":"dog","__init__":__init__)   #动态添加属性与方法
19 print(dog_class)
20 
21 d = dog_class(‘mjj‘,22)
22 print(d.role,d.name,d.age)