Python class property([fget[, fset[, fdel[, doc]]]])

gistfile1.py

# link: https://docs.python.org/2/library/functions.html

class C(object):
    def __init__(self):
        self._x = None

    @property
    def x(self):
        """I'm the 'x' property."""
        return self._x

    @x.setter
    def x(self, value):
        self._x = value

    @x.deleter
    def x(self):
        del self._x