Python OOP Tutorials Complete Series

What You Will Learn

• Create and instantiate simple classes in Python
• Understand the basics of object-oriented programming (OOP) concepts, including attributes and methods
• Learn how to use classes as blueprints to create unique instances with their own data and functions

Key Concepts

• Classes are used to logically group data and functions, making it easy to reuse and build upon them.
• Attributes and methods are associated with a specific class, where attributes are the data and methods are the functions.
• The difference between a class and an instance of a class is that a class is a blueprint, while an instance is a unique object created using that blueprint.
• Instance variables contain data unique to each instance, such as an employee’s name, email, and pay.
• Classes can be used to represent real-world objects, like employees, and can be used to create multiple instances with their own attributes and methods.

Code Examples

• class employee - This line of code defines a new class called “employee”.
• employee1 = employee() and employee2 = employee() - These lines create two unique instances of the “employee” class.
• employee1.first = "Corey" and employee1.last = "Schaefer" - These lines manually create instance variables for an employee instance.

Lesson Summary

In this lesson, we learned about the basics of creating and instantiating simple classes in Python. We saw how classes can be used as blueprints to create unique instances, each with their own data and functions. The video explained the difference between a class and an instance of a class, and how instance variables can be used to store data unique to each instance. We also saw an example of how a class can be used to represent real-world objects, like employees, and how multiple instances can be created with their own attributes and methods. The video introduced key OOP concepts, including attributes and methods, and showed how classes can be used to logically group data and functions. By the end of this lesson, you should have a basic understanding of how to create and use classes in Python, and be ready to learn more about object-oriented programming concepts.

Practice Exercise

Create a new class called “Student” and instantiate two unique instances, “student1” and “student2”. Manually create instance variables for each student, such as “name”, “age”, and “grade_level”. Then, print out the values of these instance variables to verify that they are unique to each instance.

What Is Next

In the next lesson, we will learn about class variables and how they differ from instance variables. We will also explore more advanced OOP concepts, such as inheritance and static methods, and see how they can be used to create more complex and powerful classes.