Python is one of the most popular programming languages in the world, and for good reason. It reads almost like plain English, runs on every major operating system, and is used everywhere from quick automation scripts to massive machine learning pipelines. If you are starting your programming journey, Python is one of the friendliest languages to begin with.

In this post, you will learn what Python actually is, what it is used for, and the core features that make it stand out from other programming languages.

What Is Python?

Python is a high-level, general-purpose programming language created by Guido van Rossum and first released in 1991. "High-level" means you write code close to how you would describe a problem in plain language, instead of dealing with low-level details like memory addresses. Python's design philosophy emphasizes code readability, famously summarized in "The Zen of Python" with lines like "Readability counts."

Here is the smallest possible Python program:

print("Hello from Python!")

Output:

Hello from Python!

No need to declare a class, set up a main function, or specify types — a single line is a complete, runnable program.

What Is Python Used For?

Python's simplicity and massive ecosystem of libraries make it useful across many domains:

# Web development — frameworks like Django and Flask
# Data science & analytics — pandas, NumPy
# Machine learning & AI — TensorFlow, PyTorch, scikit-learn
# Automation & scripting — file handling, web scraping
# Scientific computing — SciPy, Jupyter notebooks

This versatility is part of why Python consistently ranks as one of the most in-demand languages for developers to know, whether you're interested in building websites or training AI models.

Key Features of Python

A few characteristics define how Python behaves and why developers like using it:

  • Interpreted: Python code runs line by line through an interpreter, rather than being compiled into a standalone executable first. This makes testing and debugging faster.
  • Dynamically typed: You don't declare a variable's type — Python figures it out at runtime, covered in more depth in our guide to Python variables.
  • Readable syntax: Python uses indentation to define code blocks instead of curly braces, which keeps code visually clean and consistent.
  • Extensive standard library: Python ships with built-in modules for tasks like file handling, math, dates, and networking, so you often don't need an external package for common tasks.

Python 2 vs Python 3

You might still see references to "Python 2" online. Python 2 reached end-of-life in 2020 and is no longer maintained — all modern development uses Python 3, and that is what every tutorial on this site, including this one, refers to simply as "Python."

Now that you know what Python is and why it's worth learning, the next step is getting it installed on your machine so you can start writing real code — covered in our guide on how to install Python and set up your environment.