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Wed Oct 31 21:28:37 CET 2007 · https://mail.python.org/pipermail/python-dev/2007-October/075072.html

On 10/31/07, Phillip J. Eby <pje at telecommunity.com> wrote:
> At 11:09 AM 10/31/2007 -0700, Guido van Rossum wrote:
> >Yes, though I think that if prop.fdel is None, we could use func in
> >both slots.
>
> Eh?  Isn't prop.fdel supposed to be a single-argument function?  ISTM
> that C is the only place where fset and fdel are the same thing.

Given how rarely supporting deletions matters enough to write extra
code, we can just say that *when using @propset* your setter function
needs to have a default value for the argument or otherwise support
being called with one or two arguments.

-- 
--Guido van Rossum (home page: http://www.python.org/~guido/)

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[Python-Dev] Declaring setters with getters