python properties and inheritance

Question

I have a base class with a property which (the get method) I want to overwrite in the subclass. My first thought was something like:

class Foo(object):
    d         


        

Answer 1

A possible workaround might look like:

class Foo:
    def __init__(self, age):
        self.age = age

    @property
    def age(self):
        print('Foo: getting age')
        return self._age

    @age.setter
    def age(self, value):
        print('Foo: setting age')
        self._age = value


class Bar(Foo):
    def __init__(self, age):
        self.age = age

    @property
    def age(self):
        return super().age

    @age.setter
    def age(self, value):
        super(Bar, Bar).age.__set__(self, value)

if __name__ == '__main__':
    f = Foo(11)
    print(f.age)
    b = Bar(44)
    print(b.age)

It prints

Foo: setting age
Foo: getting age
11
Foo: setting age
Foo: getting age
44

Got the idea from "Python Cookbook" by David Beazley & Brian K. Jones. Using Python 3.5.3 on Debian GNU/Linux 9.11 (stretch)