how to create book class in python?

Question

Design a ‘book’ class with title, author, publisher, price and author’s royalty as instance
variables. Provide getter and setter properties for all variables. Also define a method
royalty() to calculate royalty amount author can expect to receive the following royalties:10%
of the retail price on the first 500 copies; 12.5% for the next 1,000 copies sold, then 15% for
all further copies sold.

Answer 1

class Book:
def __init__(self, author, title, book_id):
self.author = author
self.title = title
self.book_id = book_id

def __str__(self):
return 'Book(author, title, book_id)'

def __repr__(self):

return 'Book(author, title, book_id)'

def __eq__(self, other):

#Not sure if this is the right approach

for title in Book:
for title in Book:
if title == title:
if author == author:
if book_id == book_id:
return True