embed-attrs

Borrow attributes from other classes by embedding them. An experimental extension of attrs.

Idea

When class B is embedded into class A, all attributes of class B can be accessed and modified directly from class A.

Examples

An example from "An Introduction to Programming in Go", converted to Python with some extra stuff:

import attr
import embed

@attr.s
class Person:
    name = attr.ib(default='')

    def talk(self):
        return 'Hi, my name is {}'.format(self.name)

    def _sunder(self):
        return 'sunder'

    def __dunder__(self):
        return 'dunder'

@embed.attrs
class Android:
    person = embed.attr(Person)
    model = attr.ib(default='')

a = Android()
a.name = 'Marvin'
assert a.talk() == 'Hi, my name is Marvin'
assert a._sunder() == 'sunder'
assert a.__dunder__() == 'dunder'