Free, hands-on, but replaced by a newer track
Scientific Computing with Python still teaches Python well through 15 guided workshops and five tough certification projects, all free and all in the browser. Since December 2025, though, freeCodeCamp lists it as a legacy certification that is no longer updated. Finish it if you have already started. If you are new, take freeCodeCamp's Python Certification, which keeps the project style, adds quizzes and a 50-question exam, and covers error handling, recursion and dynamic programming. Choose a video course instead if you need an instructor explaining each concept.
What we liked
- Completely free, including the certificate
- Learn-by-building workshops such as a cipher, Sudoku solver and binary search tree
- Five certification projects with real test suites
- Runs in the browser, so there is nothing to install
- Verified certificate link you can add to LinkedIn
What we didn't
- Now a legacy certification that freeCodeCamp no longer updates
- Text-only teaching with no video explanations
- Big difficulty jump from workshops to certification projects
- No exam, so the certificate proves less than the new track's
Who it's for
Take it if you…
- have already started the legacy projects and want to finish them
- learn best by writing code rather than watching lectures
- want a free Python certificate with no paywall
- enjoy debugging against test suites
Skip it if you…
- are starting from zero in 2026, since the new Python Certification is maintained
- need video lessons or a university-branded certificate
- want Python mainly for pandas and data analysis
What you'll learn: the 5 courses
- Strings, numbers and comprehensions workshopsCipher, Luhn algorithm, expense tracker, case converter and bisection-method workshops, then the Arithmetic Formatter project.
- Algorithms workshopsPassword generator with regex, shortest-path algorithm, Tower of Hanoi and merge sort, then the Time Calculator project.
- Classes and data structures workshopsSudoku solver and binary search tree, then the Budget App project.
- Object-oriented programming workshopsVector space with special methods and an equation solver with interfaces, then the Polygon Area Calculator project.
- Encapsulation workshop and final projectProjectile trajectory calculator, then the Probability Calculator project.
Skills you'll practise
freeCodeCamp’s Scientific Computing with Python is still a good free way to learn Python by building, but it is no longer the certification to start in 2026. On December 15, 2025, freeCodeCamp launched a new Python Certification and moved Scientific Computing into its legacy group. The old track stays live and claimable, yet the course page now says its content is not being updated. Our advice is simple. If you have already finished some of the five legacy projects, complete them and claim the certificate. If you are starting from zero, take the new Python Certification instead, because it covers the same ground plus error handling, recursion and dynamic programming, and it ends with an exam that makes the credential more credible.
Scientific Computing with Python is a free, self-paced, project-based Python curriculum from freeCodeCamp. It runs fully in the browser and teaches through 15 step-by-step workshops and five certification projects. Below we cover what each version asks of you, how hard it is, and how it compares with paid courses like Python for Everybody and 100 Days of Code.
Is Scientific Computing with Python worth it in 2026?
Yes for practice, but not as your main credential. The legacy curriculum still teaches real Python through interactive projects at zero cost. The new Python Certification is the better pick for anyone starting now, because it is maintained and exam-backed.
The legacy track earned its reputation with one idea: you learn a concept by building something small. You write a cipher to learn strings, implement the Luhn algorithm to practise numbers, and solve the Tower of Hanoi to learn recursion. Each workshop is a long chain of tiny steps with instant tests, so you are typing code within the first minute. The five certification projects then remove the hand-holding. You get a spec and a test suite, and you write the program yourself.
The weakness is that freeCodeCamp has stopped updating it. The newer track adds theory lessons, labs, quizzes that need 18 of 20 correct, and a 50-question exam taken in freeCodeCamp’s Exam Environment app. That structure fixes the old complaint that the legacy certificate only proved you could pass five test suites.
Starting fresh in 2026? Choose freeCodeCamp’s Python Certification. Already halfway through Scientific Computing? Finish it, claim it, then use the new track’s later modules for extra practice.
When the answer flips
- You want a university name on the certificate. Take Python for Everybody or CS50’s Python course instead.
- You learn better from video. freeCodeCamp is almost all text. 100 Days of Code or the Python Mega Course will suit you better.
- You only need Python for data work. Kaggle Learn Python gets you to pandas in about five hours.
What does the curriculum cover?
The legacy track has 15 workshops and five required projects, in this order:
| Stage | Workshops (guided) | Certification project |
|---|---|---|
| Strings and numbers | Cipher, Luhn algorithm, expense tracker (lambdas), case converter (list comprehensions), bisection-method square root | Arithmetic Formatter |
| Algorithms | Password generator (regex), shortest-path algorithm, Tower of Hanoi (recursion), merge sort | Time Calculator |
| Classes | Sudoku solver, binary search tree | Budget App |
| Object-oriented design | Vector space (special methods), equation solver (interfaces) | Polygon Area Calculator |
| Encapsulation | Projectile trajectory calculator | Probability Calculator |
The new Python Certification reorganises this into modules: Python basics, loops and sequences, dictionaries and sets, error handling, classes and objects, OOP, linear data structures, recursion, algorithms, graphs and trees, and dynamic programming. Its five required projects are a User Configuration Manager, Budget App, Polygon Area Calculator, Hash Table and Tower of Hanoi. Pass those and the exam to claim the certificate. Details are in freeCodeCamp’s launch announcement.
How much does Scientific Computing with Python cost?
Nothing. Both the legacy track and the new Python Certification are free, including the certificate and the exam. freeCodeCamp is a nonprofit funded by donations, so there is no trial, paywall or upsell.
| Option | Price | Certificate |
|---|---|---|
| freeCodeCamp Scientific Computing (legacy) | $0 | Free, verified link |
| freeCodeCamp Python Certification (2025) | $0 | Free, exam required |
| Kaggle Learn Python | $0 | Free completion certificate |
| Python for Everybody (Coursera) | Lessons free on py4e.com; Coursera subscription for certificate | Shareable, University of Michigan |
| 100 Days of Code (Udemy) | One-off purchase, often on sale | Completion certificate |
The real cost is time. freeCodeCamp’s projects have no deadlines, so plan a fixed weekly slot. Five to eight hours a week is a realistic pace for a beginner who wants to finish within a few months.
How hard is it?
The workshops are easy to start and get harder fast. A true beginner will find the certification projects a real jump, especially the Arithmetic Formatter, which demands exact string spacing to pass its tests.
That jump is useful. The projects make you read a specification, handle edge cases and debug failing tests, which is closer to real programming than watching a video. The trade-off is that freeCodeCamp explains less than a course with an instructor. When you get stuck you rely on the forum, the hints and your own searching. People who like puzzles will enjoy this. People who need a guided explanation for every concept are likely to find the projects frustrating.
Scientific Computing with Python vs alternatives
| Course | Format | Cost | Best for |
|---|---|---|---|
| freeCodeCamp Scientific Computing / Python Certification | Text + in-browser projects | Free | Self-starters who learn by building |
| Python for Everybody | Video lectures + quizzes | Lessons free on py4e.com; paid certificate | Complete beginners who want a gentle start |
| CS50’s Python (edX) | Long lectures + problem sets | Free, with a free CS50 certificate | Learners who want university rigour |
| 100 Days of Code | Daily video projects | One-off Udemy price | Video learners who want a portfolio |
| Kaggle Learn Python | Short notebooks | Free | Fast start for data science |
freeCodeCamp wins on cost and on hands-on practice. It loses to CS50 on depth of explanation and to Python for Everybody on hand-holding. If you like in-browser exercises but want more polish, Codecademy’s Learn Python 3 and DataCamp’s Introduction to Python are the paid equivalents. For a longer university sequence with a final project, look at the Python 3 Programming Specialization. See our full best Python courses ranking and the Python subject hub for more options, or read our freeCodeCamp platform review.
Does the certificate help your career?
It helps a little. Employers do not treat a freeCodeCamp certificate as a qualification, but the projects behind it are evidence you can write working Python.
The certificate has a public verification link you can add to LinkedIn. What carries more weight is the code itself. Push your five projects to GitHub with clear README files, then build one project of your own. If you are aiming for a developer job, pair this with the paths on our software engineer career page. For more no-cost credentials, browse our free certificates hub.
FAQ
Is freeCodeCamp’s Scientific Computing with Python certification still available?
Yes. It is a legacy certification that is still live and claimable, according to freeCodeCamp’s Scientific Computing with Python page. The content is no longer updated, and new learners are better served by the Python Certification launched in December 2025.
What is the difference between Scientific Computing with Python and the new Python Certification?
The legacy track is 15 workshops plus five projects with no exam. The new Python Certification adds lessons, labs, quizzes and a 50-question exam, and swaps the Arithmetic Formatter, Time Calculator and Probability Calculator for a User Configuration Manager, Hash Table and Tower of Hanoi project.
Is freeCodeCamp’s Python certificate free?
Yes. The lessons, projects, exam and certificate cost nothing. freeCodeCamp runs on donations and does not charge learners.
Can a complete beginner do it?
Yes, the first workshops assume no experience. Expect the certification projects to feel much harder than the guided steps, and budget extra time for the first one.
Do I need to install Python?
No for the legacy track, which runs in the browser. The new Python Certification includes a short module on installing Python locally, which is worth doing anyway.