def read_dates_by_service_ids(
    path: str
) -> Dict[FrozenSet[str], FrozenSet[datetime.date]]:
    """Find dates with identical service"""
    feed = load_raw_feed(path)
    return _dates_by_service_ids(feed)
def read_dates_by_service_ids ( path : str ) -> Dict [ FrozenSet [ str ] , FrozenSet [ datetime . date ] ] : feed = load_raw_feed ( path ) return _dates_by_service_ids ( feed )
Find dates with identical service