Класс: Создайте класс, осуществляющий подсчет и изменение числа книг.

# coding=utf-8
 
 
class Books(object):
 
    def __init__(self):
        pass
 
    def __del__(self):
        pass
 
    def display_book(self, book):
        self.book = book
        return self.book
 
    def take_one_book(self, book):
        self.book = book - 1
        return self.book
    def put_one_book(self, book):
        self.book = book + 1
        return self.book
 
 
a = Books()
 
new_list = list(input().split())
 
for i in new_list:
    if i.isalpha():
        print(i, end=" ")
    if i.isdigit():
        print(a.display_book(int(i)), end=" ")
        print(a.take_one_book(a.display_book(int(i))), end=" ")
        print(a.put_one_book(a.take_one_book(a.display_book(int(i)))), end=" ")

class Books(object):
    def __init__(self):
        self._books = {}  # инициализируем поле пустым словарём
 
    def __del__(self):
        self._books = {}  # затираем поле пустым значением

class Library(object):
    def __init__(self):
        self.books = {}
 
    def __del__(self):
        self.books = {}
 
    def get_quantity(self, book):
        print(self.books[book], end=' ')
 
    def get_book(self, book):
        self.books[book] -= 1
        print(self.books[book], end=' ')
 
    def return_book(self, book):
        self.books[book] += 1
        print(self.books[book], end=' ')
 
 
a = Library()
books_init = input().split()
 
for i in range(0, len(books_init), 2):
    a.books[books_init[i]] = int(books_init[i + 1])
 
for book in a.books:
    print(book, end=' ')
    a.get_quantity(book)
    a.get_book(book)
    a.return_book(book)

class Book:
    def __init__(self,stroka):
        date = stroka.split()
        self.__kol = dict(zip(date[::2],[int(i) for i in date[1::2]]))
 
    def __del__(self):
        pass
 
    def getval(self, namebook):
        return self.__kol[namebook]
 
    def takebook(self,namebook,val):
        self.__kol[namebook] = self.__kol[namebook] - int(val)
        return self.__kol[namebook]
 
    def addbook(self, namebook, val):
        self.__kol[namebook] = self.__kol[namebook] + int(val)
        return self.__kol[namebook]
 
date_book = 'Boogeyman 66 Battleground 50'
a = Book(date_book)
for book in date_book.split()[::2]:
    print(book,a.getval(book),a.takebook(book,1), a.addbook(book,1))