# CS50's Introduction to Programming with Python

Source: https://freeaicourses.com/courses/cs50-python
Last checked: 2026-09-15

## Who it is for

- Complete beginners who want to code
- Anyone who bounced off shorter Python tutorials

## Who should skip it

- People who already write Python comfortably
- Anyone who only wants to understand AI conceptually

## What you can do afterwards

- Write, run and debug your own Python programs
- Read other people's code without panicking
- Start an ML course without the language getting in the way

## What the course covers

- Functions, variables and conditionals: The basic building blocks, taught slowly and properly.
- Loops, exceptions and libraries: Making programs that do more than one thing and fail gracefully.
- Testing, files and object-oriented programming: The habits that make code reusable.

## What works

- Superb lecturing
- Real problem sets with automatic feedback
- Free certificate through CS50's own site

## What does not

- Not AI-specific at all
- Problem sets take longer than you expect

## The catch

The free certificate comes from CS50 itself. The edX-branded verified certificate costs money.

## Take before

Nothing. This is a starting course: you need no AI or coding background.

## Take after

- Pandas
- Kaggle Intro to Machine Learning
- CS50's Introduction to AI with Python

## Verdict

If you've never coded and know you'll need Python for AI, do this before anything else. It's slower than a tutorial, but you come out actually understanding what your code does.

## Related pages

- [Pandas](https://freeaicourses.com/courses/kaggle-pandas)
- [Kaggle Intro to Machine Learning](https://freeaicourses.com/courses/kaggle-intro-machine-learning)
- [CS50's Introduction to AI with Python](https://freeaicourses.com/courses/cs50-ai)
- [Harvard CS50](https://freeaicourses.com/platforms/harvard-cs50)
- [All free AI courses, rated](https://freeaicourses.com/courses)