Introduction to Classes

Look the code below. It defines a class. it also declares methods which are functions that are defined inside of a class. One of the methods, __init__, is automatically called when a new object is created by the class. One of the methods, __str__, is automatically called when you print an object of the class.

A Book Class

Run the following code

Creating More Objects

Once you have defined a class you can use it to create many objects.

Change the following main function to add a person object with your first and last name.

Add a Method to a Class

You can add a new method to a class by adding a new function inside the class. For example, you can add the initials method to the Person class. The function must take an object of the class to work with that by convention we call self. The name of the function doesn’t need to have any underscores in it.

Change the following Person class to add an initials method that returns a string with the first letter in the first name and the first letter in the last name in lowercase.

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