authors_traditional.py

books = get_book_row_generator_from_csv('mybooks.csv')
formatted_books = list(
    map(
        sorted(
            filter(
                map(
                    books,
                    Book.from_row
                ),
                lambda: book.year >= 1950
            ),
            key=lambda book: (book.year, book.author_name.lower())
        ),
        '{0.title} | {0.author} ({0.year})'.format
    )
)