PyOnline Python Compiler
main.pyPress Run or Ctrl + Enter.
Write and run Python 3 online — free, no sign-up, nothing to install. Your code runs on your device, with input(), numpy and pandas.
How it works
Step 1
Write or paste
Type Python code or paste it in. It is kept on this device for next time.
Step 2
Run
Press Run or Ctrl + Enter. Answers for input go in the Input box.
Step 3
See the output
Output, errors with their line number, and how long it took.
Tips for Python
- The first run downloads Python (about 10 MB); after that it starts in a moment, even offline.
- import numpy, pandas and other popular packages just works — they download the first time.
- Answers for input() go in Input, one per line.
Questions
How do I run Python online?
Type or paste your code and press Run (or Ctrl + Enter). The output appears next to the code — or below it on a phone.
How does input() work?
Tap Input and write one answer per line before you press Run. Each input() takes the next line, and the answer is shown as if you had typed it.
Can I use numpy or pandas?
Yes. Popular packages such as numpy, pandas and scipy download automatically the first time you import them.
Why is the first run slow?
Python itself (about 10 MB) is downloaded once. Your browser keeps it, so later runs start in a moment.
Is my code uploaded?
No. It runs in your browser and is saved only on this device.