input: Write a function to convert a list of books, where each book is represented as a list, into a list of dictionaries, each containing the book's title, author, and number of pages.
  assert convert_books_to_dicts([['The Hobbit', 'J.R.R. Tolkien', 295], ['The Catcher in the Rye', 'J.D. Salinger', 223]]) == [
    {'title': 'The Hobbit', 'author': 'J.R.R. Tolkien', 'pages': 295},
    {'title': 'The Catcher in the Rye', 'author': 'J.D. Salinger', 'pages': 223},
  ]
  assert convert_books_to_dicts([]) == []
  assert convert_books_to_dicts([['1984', 'George Orwell', 328]]) == [{'title': '1984', 'author': 'George Orwell', 'pages': 328}]
output: def convert_books_to_dicts(books):
      return [{'title': book[0], 'author': book[1], 'pages': book[2]} for book in books]