Python 2.2 properties

[Mark McEahern]

"Oleg Broytmann" <phd at phd.pp.ru> wrote:
> To use properties properly (pun! pun! :) your class must be new-style
> class, but to create new-style class you don't need to be derived from
> object. You can derive it from any new-style class (int, float,
> str, list, dictionary...)

Thanks, that's a good observation.  I'm glad I posted this because I knew
I'd get some refinement.

Thomas Heller wrote:
> ...because these are derived from object!
>
> >>> int.__bases__
> (<type 'object'>,)
> >>>

Another good observation.  Thanks!

Given these suggestions, I'd probably suggest something like this:

"""property only works with new-style classes.  There are two ways to write
a new style class:

1.  Derive your class directly from object.
2.  Derive from a class that derives from object (e.g., list)."""

Or you could collapse 2 into 1:

Derive your class either directly or indirectly from object.

Cheers,

// mark