Steven W. Orr a écrit : > I understand that two leading underscores in a class attribute make the > attribute private.
Nope. It doesn't make it "private", it mangles the attribute name with the class name (ie : Bar.__mangled will become Bar._Bar__mangled everywhere except inside Bar). This is only useful when you want to make sure an attribute will not be *accidentally* accessed by a child class. FWIW, I've found it of very limited use so far... > But I often see things that are coded up with one > underscore. Unless I'm missing something, there's a idiom going on here. Yes. Single leading underscore means "this is implementation, don't mess with it or your on your own". It's the equivalent of "private". -- http://mail.python.org/mailman/listinfo/python-list