在 2013年1月17日星期四UTC+8上午8时34分22秒，iMath写道： > To make a method or attribute private (inaccessible from the outside), simply > start its > name with two underscores > > > ----《Beginning Python From Novice to Professional》 > > > but there is another saying goes: > Beginning a variable name with a single underscore indicates that the > variable should be treated as ‘private’. > > > I test both these 2 rules ,it seems only names that start with two > underscores are REAL private methods or attributes . > > > >>> class A: > ... def __init__(self): > ... self.a = 'a' > ... self._a = '_a' > ... self.__a = '__a' > ... > > > > > > > >>> ap = A() > >>> ap.a > 'a' > >>> ap._a > '_a' > >>> ap.__a > Traceback (most recent call last): > File "<stdin>", line 1, in ? > AttributeError: A instance has no attribute '__a' > > > so what is your opinion about single leading underscore and private methods > or attributes？
so there is no REAL private variable in Python but conversion exists in it that python programmer should follow and recognize .right ? -- http://mail.python.org/mailman/listinfo/python-list
