librarymanagementsystem.py

#Objective: Build a simple Library Management System using OOP concepts like classes, objects, inheritance, and encapsulation.

class Book:
    def __init__(self, title, author, isbn, available):
        self.title = title
        self.author = author
        self.isbn = isbn
        self.available = available

    def __str__(self):
        return f"Title: {self.title}, Author: {self.author}, ISBN: {self.isbn}, Available: {self.available}" #returns a string with book info
    
class Member:
    def __init__(self, name, member_id, books_borrowed):
        self.name = name
        self.member_id = member_id
        self.books_borrowed = [] #list of books borrowed
    
    def __str__(self):
        return f"Name: {self.name}, Member ID: {self.member_id}, Books Borrowed: {len(self.books_borrowed)}"
    
    def borrow_book(self, book): #Marks the book as borrowed
        self.books_borrowed.append(book)
        book.available = False
        print(f"{self.name} has borrowed {book.title}")
        print(f"{book.title} is now marked as borrowed")
    
    def return_book(self, book): #Marks the book as available
        self.books_borrowed.remove(book)
        book.available = True
        print(f"{self.name} has returned {book.title}")
        print(f"{book.title} is now marked as available")

class Library:
    def __init__(self, books, members):
        self.books = books
        self.members = members
    
    def add_book(self, book): #add a book to the library
        self.books.append(book)
        print(f"Added {book.title} to the library")

    def register_member(self, member): #register a member to the library
        self.members.append(member)
        print(f"Registered {member.name} to the library")

    def find_book_by_title(self, title): #find a book by title
        for book in self.books:
            if book.title == title:
                return book
        return None
    
    def display_available_books(self): #Prints all books that are available.
        for book in self.books:
            if book.available:
                print(book.__str__())

    def display_all_members(self): #Prints all members in the library
        for member in self.members:
            print(member.__str__())


#add books
book1 = Book("The Great Gatsby", "F. Scott Fitzgerald", "9780743273565", True)
book2 = Book("To Kill a Mockingbird", "Harper Lee", "9780446310789", True)
book3 = Book("Pride and Prejudice", "Jane Austen", "9780141439518", True)
book4 = Book("1984", "George Orwell", "9780451524935", True)

#add members
member1 = Member("John Doe", "1234567890", [])
member2 = Member("Jane Smith", "0987654321", [])
member3 = Member("Jim Beam", "1357911131", [])

#one member borrow a book, then return it.
member1.borrow_book(book1)
member1.return_book(book1)

#create library
library = Library([book1, book2, book3], [member1, member2])

#add books to the library
library.add_book(book4)

#register a member to the library
library.register_member(member3)

#find a book by title
found_book = library.find_book_by_title("The Great Gatsby")
print(f"Found book: {found_book}")

#find all available books
library.display_available_books()

#find all members
library.display_all_members()