Make a class names Foo Add a class variable to foo called x and initialize it to 5 Add an instance variable to foo called y and initialize it to 100   Make an instance of the class, call it f Using Foo., print out the value of x  (proper etiquette for class variables) Using f., Print out the value of  y (proper etiquette for instance/self. variables)   Hint: remember that class variables are the ones where their value is the same for all instances/clones.  And instance variable (which you declare inside the __init__ method with the self. preface, are unique to each clone.  When you print a class variable the proper way is to use classname . (for example Foo.x) and when you print an instance variable you use the instance handle (for example f.y.)

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
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python3:

Class vs Instance variable

 

  1. Make a class names Foo
  2. Add a class variable to foo called x and initialize it to 5
  3. Add an instance variable to foo called y and initialize it to 100

 

  1. Make an instance of the class, call it f
  2. Using Foo., print out the value of x  (proper etiquette for class variables)
  3. Using f., Print out the value of  y (proper etiquette for instance/self. variables)

 

Hint: remember that class variables are the ones where their value is the same for all instances/clones.  And instance variable (which you declare inside the __init__ method with the self. preface, are unique to each clone.  When you print a class variable the proper way is to use classname . (for example Foo.x) and when you print an instance variable you use the instance handle (for example f.y.)

 

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