This seems like a task for creating a library management system. Here's a simple way to do it in Python:

```python
class Book:
def __init__(self, accession_number, author, title):
self.accession_number = accession_number
self.author = author
self.title = title
self.is_issued = False

class Library:
def __init__(self):
self.books = []

def add_book(self, book):
self.books.append(book)

def issue_book(self, accession_number):
for book in self.books:
if book.accession_number == accession_number:
if not book.is_issued:
book.is_issued = True
print("Book issued successfully")
return
else:
print("Book is already issued")
return
print("Book not found")

def display_book_info(self, accession_number):
for book in self.books:
if book.accession_number == accession_number:
print(f"Accession Number: {book.accession_number}, Author: {book.author}, Title: {book.title}, Is Issued: {book.is_issued}")
return
print("Book not found")

def display_books_by_author(self, author):
for book in self.books:
if book.author == author:
print(f"Accession Number: {book.accession_number}, Title: {book.title}, Is Issued: {book.is_issued}")

def display_books_by_title(self, title):
count = 0
for book in self.books:
if book.title == title:
count += 1
print(f"Number of books with title '{title}': {count}")

def display_total_books(self):
print(f"Total number of books in the library: {len(self.books)}")
```

This code creates two classes: `Book` and `Library`. The `Book` class represents a book with its accession number, author, title, and issue status. The `Library` class represents a library with a list of books and methods to manage the books.

You can create a menu to use these classes and methods. For example:

```python
library = Library()

while True:
print("1 - Display book information")
print("2 - Add a new book")
print("3 - Display all the books in the library of a particular author")
print("4 - Display the number of books of a particular title")
print("5 - Display the total number of books in the library")
print("6 - Issue a book")
print("7 - Exit")

choice = int(input("Enter your choice:

Question

This seems like a task for creating a library management system. Here's a simple way to do it in Python:

```python
class Book:
    def __init__(self, accession_number, author, title):
        self.accession_number = accession_number
        self.author = author
        self.title = title
        self.is_issued = False

class Library:
    def __init__(self):
        self.books = []

def add_book(self, book):
        self.books.append(book)

def issue_book(self, accession_number):
        for book in self.books:
            if book.accession_number == accession_number:
                if not book.is_issued:
                    book.is_issued = True
                    print("Book issued successfully")
                    return
                else:
                    print("Book is already issued")
                    return
        print("Book not found")

def display_book_info(self, accession_number):
        for book in self.books:
            if book.accession_number == accession_number:
                print(f"Accession Number: {book.accession_number}, Author: {book.author}, Title: {book.title}, Is Issued: {book.is_issued}")
                return
        print("Book not found")

def display_books_by_author(self, author):
        for book in self.books:
            if book.author == author:
                print(f"Accession Number: {book.accession_number}, Title: {book.title}, Is Issued: {book.is_issued}")

def display_books_by_title(self, title):
        count = 0
        for book in self.books:
            if book.title == title:
                count += 1
        print(f"Number of books with title '{title}': {count}")

def display_total_books(self):
        print(f"Total number of books in the library: {len(self.books)}")
```

This code creates two classes: `Book` and `Library`. The `Book` class represents a book with its accession number, author, title, and issue status. The `Library` class represents a library with a list of books and methods to manage the books.

You can create a menu to use these classes and methods. For example:

```python
library = Library()

while True:
    print("1 - Display book information")
    print("2 - Add a new book")
    print("3 - Display all the books in the library of a particular author")
    print("4 - Display the number of books of a particular title")
    print("5 - Display the total number of books in the library")
    print("6 - Issue a book")
    print("7 - Exit")

choice = int(input("Enter your choice:

Knowee AI · Accepted Answer