TypeError: 'type' object is not subscriptable

[Gribouillis]

Do you have to use typing? Why not simply write

from abc import ABC, abstractmethod, abstractproperty
from collections import OrderedDict
 
class DataCollector(ABC):
 
    def __init__(self):
        self.__data_dict = OrderedDict()

    @property
    @abstractmethod
    def data_structure(self):
        pass
    
class Spam(DataCollector):

    @DataCollector.data_structure.getter
    def data_structure(self):
        return "stru"

if __name__ ==  '__main__':
    s = Spam()
    print(s.data_structure)

If you really want to clutter the code with use typing, note that typing.OrderedDict is not the same as collections.OrderedDict. I guess you need to use the former in the type declarations.