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

Posted by DV Shop
DV Shop
1,482 Points

How to Add a __eq__ method and how to check the Title & Author are the same and return True or False.

I have tried many times for Adđ a eq method and Check the Title & Author are same for returning True or False value. But the Bummer SyntaxError: invalid syntax. Please fix my code or correct for this issue.

My code is attached in this below. Please help me. Many thanks.

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)

1 Answer

Travis Alstrand
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Travis Alstrand
Treehouse Project Reviewer
Travis Alstrand
.a{fill-rule:evenodd;}techdegree seal-36
Travis Alstrand
Treehouse Project Reviewer

Hey DV Shop ! :wave:

Your code is valid, it just has a syntax error. If you inspect the error message on the right, you'll see it's pointing to the end of your return conditional line. Having a break like this will cause an error. So you just need to put them back to the same line like so...

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