"Python" "Some concepts and comparisons"

TYPE.__NEW__ (): Returns the class. You can think of a class as an instance created by Metaclass.

__new__ () in the normal class: Returns an instance of the class.

__NEW__ (): Returns an instance of the class. The Python interpreter executes automatically.

__INIT__ (): You have to have an instance before you can call this method.

Type.__new__ (cls,name,bases,attrs): Cls-> class,name-> class name, Bases-> inherited class consists of a tuple, a member of the Attrs-> class, contains member variables and member methods, and so on.

type(‘Hello‘, (object,), dict(hello=fn))： 第一个参数：class名字， 第二个参数：继承的父类集合，注意Python支持多重继承，如果只有一个父类，别忘了tuple的单元素写法

The third parameter: class's method name and function binding, where we bind the function fn to the method hello name

"Python" "Some concepts and comparisons"