Modules:
- book: Manages library system functionalities including book management, tracking issues and returns, and updating book statuses.
- pandas: Python library for data visualization.
- numpy: Python library for data analysis.

Functions:
- add_book(): Adds a new book to the library.
- find_book(name): Finds a book by its title.
- list_books(): Retrieves a list of all books in the library.
- issue_book(name): Issues a book and updates its status to “Yes”.
- return_book(name): Returns a book and updates its status to “No”.

Pseudocode

FUNCTION main
    DISPLAY welcome message
    PROMPT user for their name and greet them
    DISPLAY options for adding a book, listing all books, issuing a book, or returning a book
    READ user input as option
    IF option EQUALS 1 THEN
        CALL add_book
    ELSE IF option EQUALS 2 THEN
        CALL list_books
    ELSE IF option EQUALS 3 THEN
        CALL issue_book
    ELSE IF option EQUALS 4 THEN
        CALL return_book
    END IF
END FUNCTION

FUNCTION add_book
    DISPLAY prompt for book details
    READ book name, author, and volume from user input
    SET issued status to "No"
    CREATE a Book object with the provided details
    CALL add_book method of the Book object
END FUNCTION

FUNCTION list_books
    CREATE a Book object with sample data
    DEFINE column headers as ["Name", "Author", "Volume", "Issued"]
    CALL get_all_books method of the Book object
    CONVERT result to a pandas DataFrame with specified columns
    SET DataFrame index to start from 1
    PRINT the DataFrame
    RETURN the DataFrame
END FUNCTION

FUNCTION issue_book
    CALL list_books and store result in df
    PROMPT user to enter the name of the book to be issued
    READ user input as name
    FILTER df for rows where "Name" matches user input (case-insensitive)
    IF result is empty THEN
        PRINT "No books found with that name."
    ELSE
        PRINT "Books found:" and the result
        CREATE a Book object using data from the first row of the result
        CALL issue_book method of the Book object with user input
    END IF
END FUNCTION

FUNCTION return_book
    CALL list_books and store result in df
    PROMPT user to enter the name of the book to be returned
    READ user input as name
    FILTER df for rows where "Name" matches user input (case-insensitive)
    IF result is empty THEN
        PRINT "No books found with that name."
    ELSE
        PRINT "Books found:" and the result
        CREATE a Book object using data from the first row of the result
        CALL return_book method of the Book object with user input
    END IF
END FUNCTION

Main Module - Python

Pseudocode