Inconsistent behavior of descriptors

[Michael Chermside]

Denis writes:
> I've noticed that the order of attribute lookup is inconsistent
> when descriptor is used.  property instance takes precedence of
> instance attributes:
   [...]
> But it doesn't when I use custom class of descriptor:
   [...]
> Subclasses of property behave like property itself:
   [...]
> Is it an undocumented feature or I have to submit a bug report?

Looks like a bug to me.

-- Michael Chermside