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sa,m cohn
Courses Plus Student 2,010 PointsHello, I keep receiving a NameError when trying to complete a task even though I've clearly defined the class.
I am completing a task where I create a eq method to check if the author and title of a book are the same and then return true if they are and false if they aren't. When I run the code, I keep getting a NameError saying I haven't defined Book, even though I did at the top of my code with a class. Can I get some help?
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
from book import Book
class BookCase:
def __init__(self):
self.books = []
def add_books(self, book):
self.books.append(book)
1 Answer
Steven Parker
229,744 PointsOddly, this seems to work fine in the workspace.
But in general, you want to avoid referencing a class by name from inside its own code. So instead of Book, you can compare to self.__class__ instead.
Also, the "isinstance" check is a nice touch but isn't necessary for the challenge.