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

Gustavo Gutierrez
Gustavo Gutierrez
4,595 Points
Posted by Gustavo Gutierrez
Gustavo Gutierrez
4,595 Points

dunder iter(self): syntax error. stays line 6 def __iter__(Bookcase)

the syntax error says it is at line 6 but not sure where to go from there any help is appreciated thanks

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)
    def __iter__ (self):
        yield from self.books

1 Answer

jb30
jb30
44,806 Points
jb30
jb30
44,806 Points

In bookcase.py, try removing the space before the ( in def __iter__ (self):.

You don't need to have a __iter__ method in book.py, but you could create an empty __iter__ method by

def __iter__(self):
    pass

This is not a useful method, but it avoids the syntax error from not having a : and avoids the IndentationError from not having code within the method.