input: Write a function to find books containing "Alice in Wonderland" in their text.
  assert find_books_with_alice([Book("Alice in Wonderland"), Book("Through the Looking-Glass"), Book("Alice in Wonderland and Philosophy")]) == [Book("Alice in Wonderland"), Book("Alice in Wonderland and Philosophy")]
  assert find_books_with_alice([Book("Moby Dick"), Book("The Great Gatsby"), Book("Alice in Wonderland")]) == [Book("Alice in Wonderland")]
  assert find_books_with_alice([Book("War and Peace"), Book("1984"), Book("Ulysses")]) == []
output: def find_books_with_alice(books):
      return [book for book in books if "Alice in Wonderland" in book.title]