Welcome to the Python Programming Language tutorial. This series takes you from the very basics — data types, variables, and operators — all the way to advanced topics like OOP, decorators, async programming, and database connectivity. Whether you are a complete beginner or brushing up your skills, this guide gives you a solid, structured foundation to start coding today.

Prerequisites

Before you begin coding along with this tutorial, make sure you have the following ready:

What is Python?

Python is a high-level, interpreted, general-purpose programming language created by Guido van Rossum and first released in 1991. It emphasizes code readability with its clean, English-like syntax, allowing developers to express ideas in fewer lines of code than languages such as C++ or Java.

Why Learn Python?

Python is beginner-friendly yet powerful enough for professionals. Here is what makes it stand out:

Where is Python Used?

Python powers some of the biggest domains in technology today:

Your First Python Program

The traditional first program in any language prints a friendly greeting. In Python it is a single line:

print("Hello, World!")

Output:

Hello, World!

Notice how short that is. No semicolons, no class boilerplate, no imports — just the print() function doing exactly what it says. This simplicity is why Python is one of the best first languages to learn.

A Small Practical Example

Here is a tiny program that adds two numbers and prints the result:

# Add two numbers in Python
a = 10
b = 25
result = a + b
print("The sum is:", result)

Output:

The sum is: 35

Python vs Other Languages

See how the same "Hello, World!" looks in Python compared to a more verbose language:

Python and Mathematics

Python handles mathematical operations naturally, which is why it dominates data science. For example, the area of a circle is given by the formula:

And the quadratic formula, often used in problem solving, is:

$$ x = \frac{-b \pm \sqrt{b^2 - 4ac}}{2a} $$

We can translate the circle formula straight into Python:

import math

r = 5
area = math.pi * r ** 2
print("Area of the circle:", round(area, 2))

Output:

Area of the circle: 78.54

Beginner Tips

Watch the Video Tutorial