初始化 class 属性而不创建构造函数 python

Question

I have this code:我有这个代码：

class MyClass:
    a = None
    b = None

now I have this part in my code:现在我的代码中有这一部分：

my_class_instance = MyClass(a=3, b=5)

I am getting this error:我收到此错误：

TypeError: MyClass() takes no arguments

Is there a way to initialize MyClass with values for a and b without creating a constructor?有没有办法在不创建构造函数的情况下用a和b的值初始化MyClass ？

Answer 1

One possibility is a dataclass:一种可能性是数据类：

from dataclasses import dataclass

@dataclass
class MyClass:
    a: int
    b: int

mc = MyClass(a=3, b=5)