[Python-Dev] Definining properties - a use case for class decorators?

[Michele Simionato]

On 10/18/05, Antoine Pitrou <solipsis at pitrou.net> wrote:
> Le mardi 18 octobre 2005 à 10:57 -0400, Barry Warsaw a écrit :
> Currently I never use properties, because it makes classes much less
> readable for the same kind of reasons as what Jim wrote.

Me too, I never use properties directly. However I have experimented
with using helper functions to generate the properties:

_dic = {}

def makeproperty(x):
    def getx(self):
        return _dic[self, x]
    def setx(self, value):
        _dic[self, x] = value
    return property(getx, setx)

class C(object):
    x = makeproperty('x')

c = C()
c.x = 1
print c.x

But in general I prefer to write a custom descriptor class, since it
gives me much more control.

        Michele Simionato