I keep getting a NameError and it says "Book" is not defined. I can't figure it out.

Question

Add a eq method for this book class. It should check if the author and title of the book are the same and return true if they are and false if they aren’t.
class Book:
    def init(self, author, title):
        self.author = author
        self.title = title
def __str__(self):
    return f"{self.author}, {self.title}"

def __eq__(self, other):
    if isinstance(other, Book):
        return self.author == other.author and self.title == other.title
    return False
```book.py
class Book:
    def init(self, author, title):
        self.author = author
        self.title = title
def __str__(self):
    return f"{self.author}, {self.title}"

def __eq__(self, other):
    if isinstance(other, Book):
        return self.author == other.author and self.title == other.title
    return False
```
```bookcase.py
from book import Book
class BookCase:
    def init(self):
       self.books = []
def add_books(self, book):
    self.books.append(book)
```

Steven Parker · Answer

While the isinstance check is a good measure in a practical application, it's more than is needed to satisfy this challenge.   The challenge is expecting your code to be similar to the example given in the __eq__ video (https://teamtreehouse.com/library/basic-objectoriented-python/eq?t=62).  Simplify it a bit and you'll pass.
On the other hand, there's no obvious reason for this to cause an error.  You might want to report this as a bug to Support (https://teamtreehouse.com/support), it might get you a "special Exterminator badge".  :beetle:

Bienvenido a la Comunidad de Treehouse

¿Buscas aprender algo nuevo?

Scott Vaaland

Scott Vaaland

Sigo recibiendo un NameError y dice que "Book" no está definido. No puedo averiguarlo.

1 Respuesta

Steven Parker

Steven Parker