Dynamic attribute introspection

[Roman Suzi]

On Tue, 14 Aug 2001, Guido van Rossum wrote:

>please refer to the tutorial at http://python.org/2.2/descrintro.html.

Well. Here we see "register" keyword equivalent:

   This is not always what you want; in particular, using a separate
   dictionary to hold a single instance variable doubles the memory used
   by a defaultdict instance compared to a regular dictionary instance.
   There's a way to avoid this:
    class defaultdict2(dictionary):

        __slots__ = ['default']

        def __init__(self, default=None):
        ...(like before)...

   The __slots__ declaration takes a list of instance variables, and
   reserves space for exactly these in the instance. When __slots__ is

This, without any sarcasms, suggests Python is moving toward
declarations.

I cant see why __dynamic__ must be used when classes can be
non-dynamic simply when they have __slots__.

While the builtin objects have slots anyway, why this low-level details
should be used outside the introspection context?

Sincerely yours, Roman Suzi
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