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Python Basic Object-Oriented Python Emulating Built-ins Emulating Built-ins

Posted by Likhitha Reddy
Likhitha Reddy
7,623 Points

I’ve added a Bookcase class inside bookcase.py. It will hold some books in a list. Add a __iter__ method so I can loop t

I’ve added a Bookcase class inside bookcase.py. It will hold some books in a list. Add a iter method so I can loop through the books. Use yield from and the book list inside the method.

book.py 
class Book:
    def __init__(self, author, title):
        self.author = author
        self.title = title

    def __iter__(Bookcase)

    def __str__(self):
        return f'{self.author}, {self.title}'

    def __eq__(self, other):

        return self.author == other.author and self.title == other.title
bookcase.py 
from book import Book


class BookCase:
    def __init__(self):
       self.books = []

    def add_books(self, book):
        self.books.append(book)

1 Answer

Steven Parker
Steven Parker
231,268 Points
Steven Parker
Steven Parker
231,268 Points

Here's a few hints:

  • the instructions say to add the method to the Bookcase class inside bookcase.py (not to Book in book.py)
  • a "def" line should end with a colon character (:)
  • follow the hint in the instructions: "Use yield from and the book list inside the method"
  • review the lesson on __iter__ if you need to see an example of how it is used