Do I need to install Python to use PyChallenge?

No. PyChallenge runs actual CPython in your browser via WebAssembly (Pyodide). There is nothing to install and no account required to start.

Yes. PyChallenge is completely free to use. You can start coding immediately without signing up.

What Python topics does PyChallenge cover?

PyChallenge covers beginner topics like variables, loops, strings, and lists, through intermediate topics like functions, classes, list comprehensions, error handling, generators, and decorators, all the way to advanced topics like dataclasses, enums, and protocol patterns.

How is PyChallenge different from other Python learning sites?

Most Python learning sites ask you to read or watch. PyChallenge makes you write Python from scratch with instant feedback. Your code runs in real CPython, you see exactly what happened, and you know immediately if you got it right.

494 exercises · 8 tracks · runs in your browser

You read about Python.
Now actually write it.

Stop reading about Python. Write it. Real exercises, instant feedback, no setup.

Try an Exercise Now

# PyChallenge Exercise: FizzBuzz
for i in range(1, 16):
if i % 15 == 0:
print("FizzBuzz")
elif i % 3 == 0:
print("Fizz")
elif i % 5 == 0:
print("Buzz")
else:
print(i)

          PASS
          +20 XP earned!
        

494exercises

8tracks

0installs

Freeto start

Pick your track. Start immediately.

🐣 Beginner 100 exercises ⚡ Intermediate 100 exercises 🏆 Interview Prep 100 exercises 🔬 Advanced 34 exercises 📊 Data Analysis 16 exercises ⚙️ Automation 16 exercises 🤖 AI Wiring 64 exercises 🧪 Break It 64 exercises

Write. Run. Know.

Instant feedback on every line you write.

Your code runs in real CPython. Hit run, see output, see pass or fail. No guessing whether you got it right.

# Reverse a string

def reverse(s):

return s[::-1]

print(reverse("python"))

PASS nohtyp +10 XP

Hints, not answers.

Stuck? Get nudged forward, not handed the solution.

Three progressive hints per exercise. Each one opens a door without walking through it for you.

Hint 1 Think about Python's slice syntax with a step argument.

Hint 2 Unlock hint 2

Hint 3 Unlock solution

From readers to writers.

"I read the for loop chapter three times. One exercise here and it finally clicked. Writing it yourself is completely different."
Arjun S., computer science student

"I thought I knew Python from tutorials. PyChallenge showed me I couldn't actually write it yet. That gap was real."
Tom B., junior backend developer

"Ten minutes in I wrote a working function from scratch. No video course ever gave me that."
Fatima R., switching from marketing

Stop reading. Start writing.

No signup, no setup. Pick a track and write your first exercise in under a minute.