Q4: Inheritance class Fish def init_(self, first name, last name="Fish"): self.first_name = firstname self.last name = lastname def swim(sel): print(The fish is swimming.) def swim backwards(self): print The fish can swim backwards.") class Clownfish(Fish): pass class Shark(Fish): def init_(self, first.name, last.name="Shark"skeleton="cartilage) self.first_name = first_name self.last_name last name self skeleton - skeleton def swim_backwards(self): print The shark cannot swim backwards, but can sink backwards. ) casey = Clownfish("Casey) print(casey.first.name ++ casey.last.name) casey.swim) sammy - Shark('Sammy') print(sammy first.name +*+ sammy last.name) sammy.swim) sammy.swim_backwards) print(sammy.skeleton) 1. What are the parent and child classes here? 2. What does the code print out? 3. Which swim.backwards method is called when sammy.swim.backwards() is executed? Why?

Q4: Inheritance class Fish def init_(self, first name, last name="Fish"): self.first_name = firstname self.last name = lastname def swim(sel): print(The fish is swimming.) def swim backwards(self): print The fish can swim backwards.") class Clownfish(Fish): pass class Shark(Fish): def init_(self, first.name, last.name="Shark"skeleton="cartilage) self.first_name = first_name self.last_name last name self skeleton - skeleton def swim_backwards(self): print The shark cannot swim backwards, but can sink backwards. ) casey = Clownfish("Casey) print(casey.first.name ++ casey.last.name) casey.swim) sammy - Shark('Sammy') print(sammy first.name +*+ sammy last.name) sammy.swim) sammy.swim_backwards) print(sammy.skeleton) 1. What are the parent and child classes here? 2. What does the code print out? 3. Which swim.backwards method is called when sammy.swim.backwards() is executed? Why?

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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