structs in python

[Alex Martelli]

Opus wrote:

> And the __slots__ way is strange if you are using the __variables in your
> class.
> 
> class thing(object):
>   __slots__ = ["_thing__var"]         # Huh???
>   def __init__(self,init):
>     self.__var = init

This is a bug in Python 2.2, already fixed in the Python 2.3 pre-alpha
that's currently in the CVS tree -- now, type.__new__ properly 'decorates'
(aka 'mangles') each slotname whose name starts with '__' (and does not
end with '__') so __slots__=['__var'] will work fine here.  Hopefully
this bug fix will be backported to 2.2.2 ...


Alex