Georg Brandl <[EMAIL PROTECTED]> wrote:
> can someone please tell me that this is correct and why:
IMHO, it is not correct: it is a Python bug (and it would be nice to fix
it in 2.5).
> >>> class C(object):
> ... pass
> ...
> >>> c = C()
> >>> c.a = 1
> >>> c.__dict__
> {'a': 1}
> >>> c.__dict__ = {}
> >>> c.a
> Traceback (most recent call last):
> File "<stdin>", line 1, in ?
> AttributeError: 'C' object has no attribute 'a'
So far so good, I think we agree;-).
> >>> class D(object):
> ... __dict__ = {}
> ...
> >>> d = D()
> >>> d.a = 1
> >>> d.__dict__
> {}
> >>> d.__dict__ = {}
> >>> d.a
> 1
Yep, that's the bug, fully reproducible in 2.3 and 2.4. FWIW, mucking
around with gc.getreferrers (with a more uniquely identifiable value for
d.a;-) shows a dictionary "somewhere" with keys 'a' and '__dict__'...
Alex
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