On Sun, 03 Oct 2010 21:32:25 -0700, Dennis Lee Bieber wrote:
> Well... then use the double __ prefix so your instance variables
> have a class specific name... That IS what the __ are designed to do --
> ensure that the name, as used /in/ that class itself is unique, and not
> referencing something from some unknown parent class.
Unfortunately name mangling doesn't *quite* do that. It is still possible
to have name clashes.
Imagine you inherit from a class Ham:
from luncheon_meats import Ham
class Spam(Ham):
def __init__(self):
self.__x = "yummy"
You think you're safe, because the attribute __x is mangled to _Spam__x.
But little do you know, Ham itself inherits from another class Meat,
which inherits from Food, which inherits from FoodLikeProducts, which
inherits from... Spam. Which also has an __x attribute.
You now have a name clash.
--
Steven
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