Incompatibility with ABC

[vlastocom]

I really like @indexedproperty, it saves a lot of boilerplate code.

When trying to create an indexed property in an abstract class, ABC is stopping me from instantiation, see this simplified example:

from abc import ABC
from typing import Dict

from indexedproperty import indexedproperty


class A(ABC):
    def __init__(self):
        self._books: Dict[str, str] = {'U001': 'John', 'U002': 'Mark', 'U003': 'Paul'}

    @indexedproperty
    def book(self, uid: str) -> str:
        return self._books.get(uid, '[Unknown]')


class TestA:
    def test_something(self):
        assert A().book['U001'] == 'John'

#   >       assert A().book['U001'] == 'John'
#   E       TypeError: Can't instantiate abstract class A with abstract method book

Is there a way around this?