mask内置变量的魔法方法

sunny霉神

In interactive mode, the last printed expression is assigned to the variable _. This means that when you are using Python as a desk calculator, it is somewhat easier to continue calculations, for example:

>>>
>>> tax = 12.5 / 100
>>> price = 100.50
>>> price * tax
12.5625
>>> price + _
113.0625
>>> round(_, 2)
113.06
This variable should be treated as read-only by the user. Don’t explicitly assign a value to it — you would create an independent local variable with the same name masking the built-in variable with its magic behavior.

请问怎么创建一个同名的独立本地变量来mask掉内置变量的魔法行为？？？不懂。

雪山凌狐

您好！我认为理论上来说，同一个名字的变量只能存在一个，你想要不mask掉那就换一个名字，想要mask掉就用内置变量的名字。名字千千万，施主何必执着~

希望我的回答能对你有帮助，谢谢！祝你在学习的道路上越走越远！

sunny霉神

雪山凌狐 发表于 2017-3-14 21:01
您好！我认为理论上来说，同一个名字的变量只能存在一个，你想要不mask掉那就换一个名字，想要mask掉就用内 ...

谢谢你的回答。