Question

1 Approved Answer

Posted on Feb 27, 2024

# Library Project import datetime import uuid class LibrarySystem: def init(self, list_of_books, library_name): self.list_of_books = list_of_books

# Library Project    import datetime    import uuid            class LibrarySystem:        def __init__(self, list_of_books, library_name):            self.list_of_books = list_of_books            self.list_of_books = "list_of_books.txt"            self.library_name = library_name            self.books_dict = {}            with open(self.list_of_books) as bk:                content = bk.readlines()                for line in content:                    books_title, author, category = line.strip().split(",")                    book_id = str(uuid.uuid4())  # generate a unique ID                    self.books_dict.update({book_id: {"book_title": books_title, "author": author, "category": category,                                                      "quantity": 5, "availability": "yes"}})            def display_books(self):            print("-----------------------------------List Of Books----------------------------")            print("Book ID", "\t", "Title", "\t\t\t", "Author", "\t\t", "Category", "\t\t", "Quantity", "\t",                  "Availability")            print("----------------------------------------------------------------------------")            for key, value in self.books_dict.items():                print(key, "\t\t", value.get("book_title"), "\t\t", value.get("author"), "\t", value.get("category"),                      "\t\t", value.get("quantity"), "\t\t", value.get("availability"))            def rent_books(self):            rented_books = []            while True:                search_criteria = input("Enter book ID, title, author, or category to search for a book (q to quit): ")                if search_criteria == 'q':                    break                found_books = []                for book_id, book_info in self.books_dict.items():                    if search_criteria.lower() in book_info['book_title'].lower() or search_criteria.lower() in book_info[                        'author'].lower() or search_criteria.lower() in \                            book_info['category'].lower() or search_criteria == book_id:                        found_books.append((book_id, book_info))                if not found_books:                    print(f"No books found for '{search_criteria}'")                else:                    print("Found books:")                    print("Book ID", "\t", "Title", "\t\t\t", "Author", "\t\t", "Category", "\t\t", "Quantity", "\t",                          "Availability")                    print("----------------------------------------------------------------------------")                    for book_id, book_info in found_books:                        print(book_id, "\t\t", book_info['book_title'], "\t\t", book_info['author'], "\t",                              book_info['category'], "\t\t", book_info['quantity'], "\t\t", book_info['availability'])                    book_id = input("\nEnter the book ID to rent (q to quit): ")                    if book_id == 'q':                        break                    elif book_id not in self.books_dict.keys():                        print("Invalid book ID. Please enter a valid book ID.")                    elif self.books_dict[book_id]['availability'] == 'no':                        print("This book is currently not available. Please choose another book or try again later.")                    elif int(self.books_dict[book_id]['quantity']) == 0:                        print(                            "Sorry, all copies of this book have been rented out."                            " Please choose another book or try again later.")                    else:                        lender_name = input("Enter your name: ")                        issue_date = datetime.date.today()                        self.books_dict[book_id]['lender_name'] = lender_name                        self.books_dict[book_id]['issue_date'] = issue_date                        self.books_dict[book_id]['quantity'] = str(int(self.books_dict[book_id]['quantity']) - 1)                        if int(self.books_dict[book_id]['quantity']) == 0:                            self.books_dict[book_id]['availability'] = 'no'                        rented_books.append(self.books_dict[book_id]['book_title'])                        print(                            f"\nCongratulations! You have rented the book '"                            f"{self.books_dict[book_id]['book_title']}' successfully !!!\n")                        another_rental = input("Do you want to rent another book? (y/n) : ")                        if another_rental.lower() == 'n':                            self.print_receipt(rented_books)                            break            def add_books(self):            books_title = input("Enter Book Title : ")            author = input("Enter Author Name : ")            category = input("Enter Book Category : ")            quantity = input("Enter Book Quantity : ")            if books_title == "" or author == "" or category == "" or quantity == "":                print("Please enter valid input for book title, author, category and quantity!!!")                return self.add_books()            else:                with open(self.list_of_books, "a") as b:                    b.writelines(f"\n{books_title},{author},{category}")                book_id = str(uuid.uuid4())  # generate a unique ID                self.books_dict.update({book_id: {"book_title": books_title, "author": author,                                                  "category": category, "quantity": quantity, "availability": "yes"}})                print(f"The book '{books_title}' has been added successfully !!!")            def return_books(self):            while True:                book_id = input("Enter the book ID to return (6 to quit): ")                if book_id == '6':                    break                elif book_id not in self.books_dict.keys():                    print("Invalid book ID. Please enter a valid book ID.")                elif self.books_dict[book_id]['availability'] == 'yes':                    print("This book is not currently rented. Please enter a valid book ID.")                else:                    lender_name = self.books_dict[book_id]['lender_name']                    issue_date = self.books_dict[book_id]['issue_date']                    due_date = issue_date + datetime.timedelta(days=30)                    return_date = datetime.date.today()                    days_late = (return_date - due_date).days if return_date > due_date else 0                    late_fee = days_late * 0.10                    self.books_dict[book_id]['lender_name'] = ''                    self.books_dict[book_id]['issue_date'] = ''                    self.books_dict[book_id]['quantity'] = str(int(self.books_dict[book_id]['quantity']) + 1)                    self.books_dict[book_id]['availability'] = 'yes'                    print(f"\nThank you for returning the book '{self.books_dict[book_id]['book_title']}'\n")                    print("Lender Name: ", lender_name)                    print("Issue Date: ", issue_date.strftime("%Y-%m-%d"))                    print("Due Date: ", due_date.strftime("%Y-%m-%d"))                    print("Return Date: ", return_date.strftime("%Y-%m-%d"))                    print("Days Late: ", days_late)                    print("Late Fee: $", late_fee)                    return_option = input("Do you want to return another book? (y/n): ")                    if return_option.lower() == 'n':                        break            def search_books(self):            while True:                search_criteria = input("Enter a book title, author, or category to search for a book (q to quit): ")                if search_criteria == 'q':                    break                found_books = []                for book_id, book_info in self.books_dict.items():                    if search_criteria.lower() in book_info['book_title'].lower() or search_criteria.lower() in \                            book_info['author'].lower() or search_criteria.lower() in book_info['category'].lower():                        found_books.append((book_id, book_info))                if not found_books:                    print(f"No books found for '{search_criteria}'")                else:                    print("Found books :")                    print(" Book ID", "\t", "Title", "\t\t\t", "Author", "\t\t", "Category", "\t\t", "Quantity", "\t",                          "Availability")                    print("----------------------------------------------------------------------------")                    for book_id, book_info in found_books:                        print(book_id, "\t\t", book_info['book_title'], "\t\t", book_info['author'], "\t",                              book_info['category'], "\t\t", book_info['quantity'], "\t\t", book_info['availability'])                    rent_option = input("\nDo you want to rent a book? (y/n): ")                    if rent_option.lower() == 'y':                        book_id = input("\nEnter the book ID to rent: ")                        if book_id in self.books_dict.keys() and self.books_dict[book_id]['availability'] == 'yes':                            lender_name = input("Please Enter your name: ")                            issue_date = datetime.date.today()                            self.books_dict[book_id]['lender_name'] = lender_name                            self.books_dict[book_id]['issue_date'] = issue_date                            self.books_dict[book_id]['quantity'] = str(int(self.books_dict[book_id]['quantity']) - 1)                            if self.books_dict[book_id]['quantity'] == '0':                                self.books_dict[book_id]['availability'] = 'no'                            print(                                f"\nCongratulations! You have rented the book '{self.books_dict[book_id]['book_title']}' "                                f"successfully !!!\n")                            return                        else:                            print("Invalid book ID or the book is not available for rent. Please enter a valid book ID.")                    else:                        return            def print_receipt(self, rented_books):            print("\n--------------------- Receipt ---------------------")            print("Book Title", "\t\t\t", "Return Due Date")            print("---------------------------------------------------")            due_date = datetime.date.today() + datetime.timedelta(days=30)            for book_title in rented_books:                print(book_title, "\t\t\t", due_date.strftime("%Y-%m-%d"))            print("---------------------------------------------------\n")            if __name__ == "__main__":        try:            mylms = LibrarySystem("list_of_books.txt", "Python's")            press_key_list = {"1": "Display Books", "2": "Rent Books", "3": "Donate Books", "4": "Return Books",                              "5": "Search Books", "6": "Exit"}                key_press = False            while not (key_press == "6"):                print(f"\n-------------Welcome TO {mylms.library_name}'s Library System---------------\n")                for key, value in press_key_list.items():                    print("Press", key, "To", value)                key_press = input("Press Key : ").lower()                if key_press == "1":                    print("\nCurrent Selection : Display Books\n")                    mylms.display_books()                    elif key_press == "2":                    print("\nCurrent Selection : Rent Books\n")                    mylms.rent_books()                    elif key_press == "3":                    print("\nCurrent Selection :   Donate Books\n")                    mylms.add_books()                    elif key_press == "4":                    print("\nCurrent Selection : Return Books\n")                    mylms.rent_books()                    elif key_press == "5":                    print("\nCurrent Selection : Search Books\n")                    mylms.search_books()                    elif key_press == "6":                    break                else:                    continue            except Exception:              print("Something went wrong. Please check again !!!!!")