How to use the override _ _ new__ method in python

This article mainly introduces how to use the rewrite _ _ new__ method in python. It is very detailed and has a certain reference value. Friends who are interested must finish it!

1. Overriding the _ _ new__ method must be returnsuper (). _ _ new__ (cls).

If the class inherits only the object class, it can also be replaced with object._new__ (cls), which is not recommended.

Otherwise, if Python's interpreter does not refer to the object that allocates space, the object's initialization method will not be called.

2. _ _ new__ is a static method (see source code), and you need to actively transfer cls parameters when calling.

Example

Class MusicPlayer (object): def _ new__ (cls, * args, * * kwargs): # if no result is returned, return super (). _ new__ (cls) def _ _ init__ (self): print ("initialize the music playback object") player = MusicPlayer () print (player) above is all the content of the article "how to rewrite the _ _ new__ method in python" Thank you for reading! Hope to share the content to help you, more related knowledge, welcome to follow the industry information channel!