13: Abstract Classes(python)

                              Abstract Classes

Task
Given a Book class and a Solution class, write a MyBook class that does the following:

  • Inherits from Book
  • Has a parameterized constructor taking these  parameters:
    1. string 
    2. string 
    3. int 
  • Implements the Book class' abstract display() method so it prints these  lines:
    1. , a space, and then the current instance's .
    2. , a space, and then the current instance's .
    3. , a space, and then the current instance's .

Note: Because these classes are being written in the same file, you must not use an access modifier (e.g.: ) when declaring MyBook or your code will not execute.

Input Format

You are not responsible for reading any input from stdin. The Solution class creates a Book object and calls the MyBook class constructor (passing it the necessary arguments). It then calls the display method on the Book object.

Output Format

The  method should print and label the respective , and  of the MyBook object's instance (with each value on its own line) like so:

Title: $title
Author: $author
Price: $price

Note: The  is prepended to variable names to indicate they are placeholders for variables.


Solution:

class MyBook(Book):
def __init__(self, title, author, price):
super().__init__(title, author)
self.price = price
def display(self):
print("Title:", self.title)
print("Author:", self.author)
print("Price:", self.price)
title = input()
author = input()
price = int(input())
new_novel = MyBook(title, author, price)
new_novel.display()

Comments

Popular posts from this blog

15: Linked List(python)