del(instance.attr) -- no attribute

Erik Max Francis max at alcyone.com
Sun Sep 1 23:43:11 CEST 2002


Lee Harr wrote:

> Is this a bug?
> 
> >>> class C:
> ...  a = 1
> ...
> >>> c = C()
> >>> c.a
> 1
> >>> del(c.a)
> Traceback (most recent call last):
>   File "<stdin>", line 1, in ?
> AttributeError: C instance has no attribute 'a'
> >>> hasattr(c, 'a')
> 1
> >>>
> 
> I can see that maybe del(c.a) should not be allowed to delete
> the attribute, but I think the error message is misleading.

Well, to its credit, it _does_ say that the _instance_ doesn't have the
attribute, which is precisely what the problem is.

-- 
 Erik Max Francis / max at alcyone.com / http://www.alcyone.com/max/
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 A lambda calculus explorer in Python.



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