Can I save my Python code and results from this console?

Copy the transcript with the Copy button and paste it wherever you keep your work. The console does not save sessions: nothing you type is stored, here or anywhere else.

Is my data secure in this online Python console?

Yes. Python runs inside your browser tab, not on our servers. Your code and any data you paste never leave your computer, which is a stronger guarantee than any server-side notebook can offer.

How is this different from regular Python?

The language is the same CPython. What differs is the environment: less memory, no file-system access, no interactive input, slower on heavy computation, and only the subset of packages built for WebAssembly.

Can I install additional Python packages?

Yes. Type pip install pandas as you normally would. Packages bundled with Pyodide install instantly; anything else is fetched from PyPI via micropip, which supports pure-Python wheels only.

FREE TOOL · RUNS IN YOUR BROWSER

Online Python Console

Run Python in your browser. No installation, no signup, and nothing you type is sent to a server.

~10 MB core · packages load on demand · loads when you click

Try one:

Add a package:

What runs here

This is CPython, compiled to WebAssembly and running inside your browser tab. Variables persist between commands, so you can build an analysis step by step, and matplotlib figures appear inline. Because everything executes locally, your code and your data never reach a server.

It is powered by Pyodide, which compiles CPython and the scientific stack to WebAssembly. NumPy, pandas, matplotlib, SciPy and scikit-learn are one click away.

Limitations

A browser is not a workstation. Here is what you will run into:

input() does not work. It needs to pause Python and wait for you, which a browser session cannot do without a blocking dialog, so it raises instead. Assign values directly.
There is no stop button. Python runs on the page's main thread, so an endless loop (while True:) freezes the tab and the only way out is to close it. R does not have this problem — it runs in a background worker.
pip install is handled for you. Type it and we install from Pyodide's bundled distribution, falling back to micropip for pure-Python wheels. Packages with compiled C extensions that have not been ported to WebAssembly will not install.
Memory is limited compared with desktop Python, and large data or heavy models may be slow or fail outright.
Files are virtual and temporary. open(), read and write work, but everything lives in memory and disappears when you reload the tab — and the console cannot see your disk. To load a CSV, paste it: pd.read_csv(io.StringIO("a,b\n1,2")). To analyse a real file of your own, use Prova.

Frequently asked questions

Can I save my Python code and results from this console?: Copy the transcript with the Copy button and paste it wherever you keep your work. The console does not save sessions: nothing you type is stored, here or anywhere else.
Is my data secure in this online Python console?: Yes. Python runs inside your browser tab, not on our servers. Your code and any data you paste never leave your computer, which is a stronger guarantee than any server-side notebook can offer.
How is this different from regular Python?: The language is the same CPython. What differs is the environment: less memory, no file-system access, no interactive input, slower on heavy computation, and only the subset of packages built for WebAssembly.
Can I install additional Python packages?: Yes. Type pip install pandas as you normally would. Packages bundled with Pyodide install instantly; anything else is fetched from PyPI via micropip, which supports pure-Python wheels only.