Underscore data hiding (was python development practices?)

[Skip Montanaro]

    Russell> My understanding is that a double underscore is required for
    Russell> Python to automagically mangle the name. On the other hand, two
    Russell> postings now suggest that a single underscore is sufficient.

    Russell> If double underscore is required, then it seems to me this is a
    Russell> very common misconception that a single is sufficient. It might
    Russell> be worth changing.

A double leading underscore is requred to coax Python into mangling an
attribute.  I think a lot of people use a single underscore as a simple cue
for themselves and other programmers that an attribute isn't meant to be
part of the public interface without messing up the actual name, so it can
be used easily in subclasses.

-- 
Skip Montanaro (skip at pobox.com)
http://www.mojam.com/
http://www.musi-cal.com/