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run · print · debug Ready

Python Compiler

Write Python, hit Run, and see output or errors right away. Running Python 3.6.8 on the server.

Formatter →
Code 0 lines
Output 
Output will appear here after you run code.

Python Compiler

Python Compiler lets you write and run Python 3 code online and see stdout, stderr, and exit codes immediately.

About Python Compiler

Python Compiler lets you write and run Python 3 code online and see stdout, stderr, and exit codes immediately.

It uses the same brutalist editor as Python Formatter and executes scripts on the server with a 10-second timeout. Great for quick experiments, interview snippets, and learning print output without installing Python locally.

How to use Python Compiler

  1. Write Python in the Code panel or load the date example.
  2. Click Run code or press Ctrl+Enter.
  3. Read stdout and stderr in the Output panel — green for success, red for errors.
  4. Upload a .py file for larger scripts (scroll inside the editor).
  5. Use Python Formatter to clean indentation before sharing code.

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Frequently asked questions

Is Python installed on the server?
Yes, when Python 3 is available to the web server user. The page shows the detected version when ready.
Can I install pip packages?
No. Only the standard library available in the server Python install can be used.
What are the limits?
16 KB code max, 10 second timeout, 20 runs per minute per IP.
Is my code stored?
Scripts run in a temporary file that is deleted immediately after execution.
How is this different from the formatter?
The formatter fixes indentation in your browser without running code. The compiler executes Python on the server and shows runtime output.