Write a Python program to implement the following:

A.$.$ Design a class called ISBN to represent an International Standard Book Number or

ISBN for short. The ISBN consists of 10$10$ digits divided into 4$4$ parts.

For example, the ISBN 0941831396$0941831396$ represents the following information:

The first part: The first digit "0"$"0"$ signifies the book is from an English−$-$speaking country.

The second part: "941831"$"941831"$ identifies the publisher.

The third part: "39"$"39"$ is the title number for the book.

The fourth part: "6"$"6"$ is a check digit to indicate that the sum of the ISBN digits is 10.$10.$

The class should have a constructor and methods to set and get the ISBN as a string.

B.$.$ Design a Book class that represents relevant information about a book, including the

book's title, author, publisher, city and date of publication, and price.

The class should also include the field ISBN isbnNum; where ISBN is the class defined

above.

This class should include a constructor and the following methods:

−$-$ setBookISBN: to set the ISBN for the book.

−$-$ getAuthor: to return the author of the book.

−$-$ setAuthor: to set the author of the book.

−$-$ getBookISBN: to get the ISBN of the book.

−$-$ printDetails: to print the information of a book in the following form:

Book Title: Object First with Python

Book Author: AuthorAA

Publisher: Prentice Hall

ISBN: 0941831396$0941831396$ python