Question

Write a Python class to represent a LibraryMember that takes books from a library. A member has four private attributes, a name, an id, a fine amount, and the number of books borrowed. Your program should have two functions to add to the number of books and reduce the number of books with a member. Both functions, to add and return books, must return the final number of books in hand. Your program should print an error message whenever the member tries to take more than 3 books with the message “Note: You cannot have more than 3 books.” and return the value -1.

The following test case reveals the use of the class. Define a Python class to match the test case given below.

#Test: Do NOT change this code

member1 = LibraryMember()
member1.setName("John")
member1.setID("4521")
member1.setBooks(2) # set number of books in hand

member1.setFine(27.5) # set fine amount

print(member1.showInfo()) # Shows all the information of a member

print("Books in hand:", member1.returnBook(2)) # Return 2 books

member2 = LibraryMember("Mariam", "4531", 5)

print("Books in hand:", member2.takeBook(6)) # Take 6 books

Answer 1

This is the Python class created as per the given requirements.

I have created all the required functions and the private data members and also tested it with the given statements.

Thank you.

class LibraryMember:

    def __init__(self,name = "",id = "",books = 0,fine_amt = 0.0):

        self.name = name

        self.id = id

        self.fine_amt = fine_amt

        self.books = books

    def setName(self,name):

        self.name = name

    def setID(self,id):

        self.id = id

    

    def setBooks(self,books):

        self.books = books

    def setFine(self,fine_amt):

        self.fine_amt = fine_amt

    def takeBook(self,newBooks):

        if(newBooks>3):

            print("Note: You cannot have more than 3 books.")

            return -1

        else:

            self.books = self.books + newBooks

            return self.books

    

    def returnBooks(self,retBook):

        if(retBook>self.books):

            print("Books to be returned is greater than the number of books taken!")

            return -1

        else:

            self.books = self.books - retBook

            return self.books

    def showInfo(self):

        info = {"Name":self.name,"ID":self.id,"Fine Amount": self.fine_amt,"Books": self.books}

        return info

member1 = LibraryMember()

member1.setName("John")

member1.setID("4521")

member1.setBooks(2)

member1.setFine(27.5)

print(member1.showInfo())

print("Books in hand: ",member1.returnBooks(2))

member2 = LibraryMember("Mariam","4531",5)

print("Books in hand:",member2.takeBook(6))