property.py

#! /usr/bin/env python
# -*- coding: utf-8 -*-

class A(object):
    def __init__(self):
        self._foo = None

    def foo():
        doc = "The foo property."
        def fget(self):
            return self._foo
        def fset(self, value):
            self._foo = value
        def fdel(self):
            del self._foo
        return locals()
    foo = property(**foo())

a = A()
print(a.foo)
a.foo = "hello"
print(a.foo)