Work with the pillars of OOP in Python, including classes, inheritance, and polymorphism.

Python for Programmers

In this module, we’ll learn to write cleaner, more modular, and more scalable code in Python by gaining mastery in object-oriented programming (OOP). We'll start with the basics of object-oriented programming and move to more advanced concepts such as inheritance, information hiding, and polymorphism. Along the way, we'll learn how each concept applies to Python in particular, as well as how various Python features make it particularly convenient for OOP. This module has hands-on coding challenges, playgrounds, snippets, and illustrations to keep things interactive.

Object-Oriented Programming in Python

The containers for data and functions in a class definition can be divided into the following two types:

The containers for data and functions in a class definition can be divided into the following two types:

What is the output of the code below?
``` python
class MyClass:
    def __init__(self, x, y):
        self.x = y
        self.y = x


obj1 = MyClass(2, 5)
print('x =', obj1.x)
print('y =', obj1.y)

```

What is the output of the code below?
<pre><code class="language-python">class MyClass:
 def __init__(self, x, y):
 self.x = y
 self.y = x


obj1 = MyClass(2, 5)
print('x =', obj1.x)
print('y =', obj1.y)

</code></pre>

Methods and properties in Python class are public by default.

Methods and properties in Python class are public by default.

Python uses the latest method definition for its implementation.

What will happen if we redefine a method several times and give it different arguments?

What will happen if we redefine a method several times and give it different arguments?

If you don't initialize properties in an initializer, the Python compiler will assign random values to them.

If you don’t initialize properties in an initializer, the Python compiler will assign random values to them.

Take this short quiz to test your understanding of classes in Python.

Introduction to Object-Oriented Programming

Classes and Objects

Information Hiding

Inheritance

Polymorphism

Object Relationships

Conclusion

Quick Quiz!