Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

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

Posted by Nischal Shrestha
Nischal Shrestha
2,027 Points

I dont see what's wrong, I keep on getting you need to define __eq__ with self and other, which i have clearly done.

Help me here

book.py 
class Book:
    def __init__(self, author, title):
        self.author = author
        self.title = title
    def __str__(self):
        return "{}, {}".format(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

Brandon White
seal-mask
.a{fill-rule:evenodd;}techdegree seal-36
Brandon White
Full Stack JavaScript Techdegree Graduate 35,771 Points
Brandon White
.a{fill-rule:evenodd;}techdegree seal-36
Brandon White
Full Stack JavaScript Techdegree Graduate 35,771 Points

Hi Nischal,

Your code looks good, except you have some white space between eq and the parenthesis. That's why you're getting the error. Get rid of that space and you'll be fine.

Nice work.

Nischal Shrestha
Nischal Shrestha
2,027 Points

Brandon White I added that space after it didn't work with out space the space. My code runs okay!! in Visual Studios Code.