[Steven]
> Can someone give me an example of where __-mangling really solved a problem 
> for them, where a simple leading underscore wouldn't have solved the 
> same problem?

http://cvs.sourceforge.net/viewcvs.py/spambayes/spambayes/spambayes/Dibbler.py?r1=1.13&r2=1.13.4.1

That's a bugfix to SpamBayes, where I'd inadvertently named an instance
variable '_map' without realising that the base class
(asynchat.async_chat) also had an instance variable of that name.  Using
double underscores fixed it, and had I used them from the beginning the
bug would never have cropped up (even if asynchat.async_chat had an
instance variable named '__map', which is the whole point (which you know,
Steven, but others might not)).

-- 
Richie Hindle
[EMAIL PROTECTED]

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