Python privatization and the nature of property privatization __python

Privatization XX: Public variable _x: single-front underline, privatization property or method, from somemodule import * Prohibit import, class objects and subclasses can access __xx: double-fore underline, avoid naming conflicts with attributes in subclasses, cannot be accessed directly from the outside ( Name reorganization so no access to) xx: Double front and back underline, user name space magical object or attribute. For example: init , don't invent the name yourself. Xx_: Single-post underline, used to avoid conflicting with Python keywords to access a private variable in a class