How Do I Make Private Variables Inaccessable in Python?
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1 2 3 4 5 6 7 | class Car(object): def __init__(self, color, engine, oil): self.color = color self.__engine = engine self.__oil = oil a = Car('black', 'a cool engine', 'some cool oil') |
我们假设"引擎"和"油"变量是私有的，这意味着我不能通过像"引擎"这样的调用访问它们。但是，我可以使用uudict_uuuuuuuuuuuuuuuuuvariable访问甚至更改这些变量。
1 2 3 4 5 6 7 8 | # Accessing a.__dict__ {'_Car__engine': 'a cool engine', 'color': 'black', '_Car__oil': 'some cool oil'} # Changing a.__dict__['_Car__engine'] ="yet another cool engine" a.__dict__ {'_Car__engine': 'yet another cool engine', 'color': 'black', '_Car__oil': 'some cool oil'} |
问题很简单。我希望只在类内访问和更改私有变量。
The problem is simple. I want private variables to be accessed and changed only inside the class.
所以，不要在访问以
在Python中，您试图做的是不可能的。
"Private" instance variables that cannot be accessed except from inside an object don’t exist in Python.
https://docs.python.org/2/tutorial/classes.html私有变量和类本地引用