【Python】如何正确使用下划线 underscore

原文： https://www.xingyulei.com/post/py-dunder/

Single Leading Underscore:

_var

Indicating a name is protected, for internal use. Not enforced by python interpreter

Double Leading Underscore:

__varIndicating a name is private. Enforced by interpreter, attempt to call it will trigger AttributeError

Double Leading Trailing Underscore:

__var__Special methods (magic methods) defined by python language, avoid naming your own attribute

Single Trailing Underscore:

var_Avoid naming conflict with python keywords

Single Underscore:

_Temporary variable name, variables that are never usedExample:

a, b, c, d = ([] for _ in range(4))

for _ in random_list:
    some_operation()

Dan Bader - The Meaning of Underscores in Python

Tutorials Teacher - Python - Public, Protected, Private Members