Books.py

class Authors:
 
    def __init__(self, author1, author2):
        self.author1=author1
        self.author2=author2

    def __str__(self):
        return self.author1 + ' and ' + self.author2

class Book:
    
    def __init__(self, book_name, ISBN , pages_number):
        self.book_name=book_name
        self.ISBN=ISBN
        self.pages_number=pages_number
        #self.authors=[]
        #self.authors.append(Authors)
    
    def add_author(self, author1, author2):
        #self.authers.append(Authors(author1,author2))
        self.authors=[]
        self.authors.append((author1,author2))
    
    def __str__(self):
        res = "Book Name: " + self.book_name
        #res = res + "\nAuthor Name: " + self.auther_name
        res = res + "\nISBN_10: " + self.ISBN
        res = res + "\nNumber of Pages: " + str(self.pages_number)
        res = res + "\nAuthors: "
        for n in self.authors:
            res = res + "\n" + str(n)
            #res = res + "\n" + str(n)
        return res
    
    def __gt__(self, other):
        return self.pages_number>other.pages_number
        
    def __eq__(self,other):
        return self.pages_number==other.pages_number
    
    def __le__(self, other):
        return self.pages_number<=other.pages_number
    
    def __ge__(self, other):
        return self.pages_number>=other.pages_number

Sorted_Books.py

import Books
#import Merge_Sor_Box

B=[]
book_list=[]

B.append(Books.Book('Fluent Forever','0385348118',336))
B[-1].add_author('Gabriel Wyner','')
B.append(Books.Book('Amazing Memory','9781907486975',208))
B[-1].add_author('Dominic OBrien','')
B.append(Books.Book('How to Read a Book','0671212095',426))
B[-1].add_author('Mortimer J. Adler','Charles Van Doren')

print('Unsorted books list:')
for i in range (len(B)):
    print(B[i].book_name,B[i].pages_number)
    
B.sort()

print('\nSorted books list:')
for i in range (len(B)):
    print(B[i].book_name,B[i].pages_number)    

Yes