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Introduction to Python · Lesson 3 of 11

Where Is Python Used?

A free lesson from Swipe Coding · Python, level 1 · updated October 2026

By the Swipe team, founded by Colin · how we make lessons

🤖
Python turns up in more places than you'd guess — let's tour a few. 🐍

Python shows up in more places than most people expect. Here are the areas where it's used the most.

📊 Data science & machine learning: Libraries like NumPy, pandas, and scikit-learn have made Python the default language for analyzing data and training machine learning models. If you've heard of AI research being done in Python, this is why.

Quick check

Which field is Python especially well known for, thanks to libraries like NumPy and pandas?

🌐 Web backends: Frameworks like Django and Flask let developers build the server side of websites and apps in Python — the part that handles data, logins, and business logic behind the scenes.

Fill in the blank

Django and Flask are popular Python frameworks used for building ____.

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This is the use case that quietly saves people hours of tedious clicking. 🤖

⚙️ Automation & scripting: Python is a favorite for writing small scripts that automate repetitive tasks — renaming hundreds of files, scraping data from websites, or running scheduled jobs — thanks to how quickly you can write and run something useful.

🔬 Scientific computing: Researchers in physics, biology, and other sciences often use Python to run simulations and analyze experimental results, since it's approachable for people who aren't primarily software engineers.

True or false

Python is mainly used for small hobby scripts and has little presence in professional or scientific work.

Chapter quiz

Introduction to Python

10 questions · pass with 60% — just like in the app.

Quick check

Which best describes Python?

True or false

Python uses indentation instead of curly braces to define blocks of code.

Fill in the blank

Python is a(n) ____ language, meaning the interpreter runs code directly without a separate compile step you trigger.

Quick check

Which of these is a common use case for Python?

True or false

Python was created by Guido van Rossum.

Fill in the blank

Python was named after the comedy group Monty ____.

Quick check

Which Python version is actively maintained today, after Python 2 reached end of support in 2020?

True or false

Django and Flask are popular Python frameworks for building web backends.

Fill in the blank

Python is a favorite for writing scripts that ____ repetitive tasks.

Quick check

Which organization guides the development of Python as an open-source project today?

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