[Python-Dev] Are property descriptors intended to be immutable?

[Curt Hagenlocher]

On Fri, Feb 6, 2009 at 4:04 PM, Guido van Rossum <guido at python.org> wrote:
> On Fri, Feb 6, 2009 at 2:44 PM, Curt Hagenlocher <curt at hagenlocher.org> wrote:
>> ...because they're not quite :).  Should I file this as a bug report?
>
> No, this is just how it works. I hope they aren't documented as immuable?

Not that I know of :).  But the individual properties of the
descriptor are all read-only and that the implementations of setter,
getter and deleter return new objects instead of mutating and
returning the old descriptor.  So it seemed a little odd that there
was just one way remaining in which the object could be mutated.

(I'm a recent convert to the joys of immutability. :)

--
Curt Hagenlocher
curt at hagenlocher.org