Detailed explanation of some basic concepts in python

Object-oriented:

Concepts: class, instantiation, object, instance

Properties:

Public properties: defined in the class

Members Attributes: Defined in the method

Private attributes: Use the __ attribute in the method to define restricted external access

Method:

Ordinary method

Class method : @classmethod decorates the class name. Called by default (cls)

Static method: @staticmethod decorates the class name. Called, it has nothing to do with the class itself, and is equivalent to a tool function in the class

Attribute method: @property decoration is called as an attribute

Built-in method: (special method) __new__ triggers __init__ to create an instance

__init__ constructor method

__doc__ View the description information of the class

__module__ Which module is the object currently operated on

__class__Which class was created by the object currently operated on

__del__ The destructor method is automatically executed when the current object is released in memory

__dict__ View members in the class or object

__str__ If this method is defined in a class, then print The return value of this method is output by default when the object is used

To define in what form it is created

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