zoo.py

class Zoo:
    def __init__(zoo_outline: ZooOutline):
        self._owner_name: str = zoo_outline.owner_name
        # TODO: It would be great to replace self._owner_name with
        # reference to an actual Person model instance from the database.
        # We probably get the owner name by fetching the owner person
        # from the database.
        # But this might be too invasive.
        self._free_entrance_day = zoo_outline.free_entrance_day.value
        # zoo_outline.free_entrance_day is an Enum, thus we call .value
        ...

    ...