def get_genre(genre, repo: AbstractRepository):
genre = repo.get_genre()
if genre is None:
raise NonExistentMovieException
return genre
def get_movies_by_genre(genre: str, repo: AbstractRepository):
"""
"""
genre = repo.get_genre(genre)
if genre is None:
raise UnknownGenreException
movies = repo.get_movies_by_genre(genre)
return [utils.movie_to_dict(movie) for movie in movies]