Gain insights into writing cleaner, modular, and scalable Python code through Object-Oriented Programming. Dive into inheritance, polymorphism, and more with coding challenges and illustrations.

cpp17.tar.gz

Learn to write cleaner, more modular, and more scaleable code in Python by gaining a master of Object Oriented Programming (OOP). 

You'll start with the basics of object oriented programming and build up to more advanced concepts such as inheritance, information hiding, and polymorphism. Along the way you'll learn how each concept applies to Python in particular, as well as how various Python features make it particularly convenient for OOP.

This course is filled with hands-on coding challenges, playgrounds, snippets, and illustrations to keep things interactive.

Learn Object-Oriented Programming in Python

# Overloading operators in Python 
Operators in Python can be overloaded to operate in a certain user-defined way. Whenever an operator is used in Python, its corresponding method is invoked to perform its *predefined* function. For example, when the `+` operator is called, it invokes the special function, `__add__`, in Python, but this operator acts differently for different data types. For example, the `+` operator **adds** the numbers when it is used between two `int` data types and **merges** two strings when it is used between `string` data types. 

Run the code below for the implementation of the `+` operator for integers and strings.

print(5 + 3)  # adding integers using '+'
print("money" + "maker")  # merging strings using '+'


# Overloading operators for a user-defined class
When a class is defined, its objects can interact with each other through the operators, **but** it is necessary to define the behavior of these operators through operator overloading. 

We are going to implement a class that represents a complex number.“ A complex number consists of a real part and an imaginary part.





When we *add* a complex number, the real part is added to the real part, and the imaginary part is added to the imaginary part.

Similarly, when we *subtract* a complex number, the real part is subtracted from the real part, and the imaginary part is subtracted from the imaginary part.

An example of this is shown below: 

$a=3+7i$

$b=2+5i$

$a+b=(3+2)+(7+5)i=5+12i$

$a-b=(3-2)+(7-5)i=1+2i$

Learn about operator overloading in Python.

Introduction to Object-Oriented Programming

Classes and Objects

Information Hiding

Exam 1

Inheritance

Polymorphism

Object Relationships

Exam 2

Operator Overloading

Overloading operators in Python

Overloading operators for a user-defined class