OOP Lab: Mini Library System

Build a mini library management system using Python classes. The system must support books, members, and borrowing/returning operations.

Classes to Implement

1. Book

• title, author, isbn — stored as instance attributes
• is_available: bool — True by default
• __str__ — returns "title by author"
• __repr__ — returns "Book(title, author, isbn)"
• __eq__ — two books are equal if their ISBN matches

2. Member

• name, member_id — stored as attributes
• borrowed_books: list — empty list initially
• borrow(book) — adds the book to borrowed_books and sets book.is_available = False; raises ValueError if book is not available
• return_book(book) — removes the book from borrowed_books and sets book.is_available = True; raises ValueError if the member doesn't have that book
• __str__ — returns "Member(name, N books borrowed)"

3. Library

• name, books: list, members: list
• add_book(book) — adds a Book to the catalog
• register_member(member) — adds a Member
• search_by_title(query) — returns list of books where query (case-insensitive) is in the title
• available_books() — returns list of available books
• __len__ — returns total number of books in the catalog
• __contains__ — returns True if a Book (by ISBN) is in the catalog

Example Usage