[Little Turtle] Getting started learning Python Notes "Magic Method"

// __new__ (cls[,....]) // object instantiates the first method of the call, its first argument is this class, and the other parameters are passed directly to the __init__ () method // overriding the __new__ () method when you need to modify it on the basis of a base class

// __del__ () method // The __del__ () method is called only if all objects instantiated by this class are dropped by Del

//operator overloading in PythonclassNew_int (int)://subclass New_int Based on the base class intdef__add__ (Self,other)//overloaded operator +        return int. __sub__ (Self,other)//returns the subtraction operation of a base classclassNew_int (int): def__add__ (self,other):return int(self)-int(Other)//equivalent to int. __sub__ (self,other)>>>a = New_int (1)>>>b = New_int (3）

[Little Turtle] Getting started learning Python Notes "Magic Method"