[Python-Dev] PEP 318 - generality of list; restrictions on elements

[Greg Ewing]

Aahz <aahz at pythoncraft.com>:

> Maybe I'm misunderstanding something.  I thought that a property contains
> a get descriptor, which makes it a kind of callable.

A property is a descriptor which *contains* up to 3 callables (for
get, set, del), but descriptors themselves are not callable.

This is one reason we can't require the result of a decorator to be
callable. That would immediately rule out classmethod and
staticmethod, which return descriptors, not callables!

Greg Ewing, Computer Science Dept, +--------------------------------------+
University of Canterbury,	   | A citizen of NewZealandCorp, a	  |
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greg at cosc.canterbury.ac.nz	   +--------------------------------------+