Write scripts, plot graphs and work with data using numpy, pandas and matplotlib. No install. No setup.
Plot anything
matplotlib, rendered right in the page. Lines, bars and distributions, drawn live from Python.
Live workspace
No install required. Write Python and see the result, without leaving this page.
Launch the live workspace
Loads the full Python environment in this window.
Why Black Layer Labs
A focused workspace that opens instantly and gets out of your way.
Real CPython in the browser. No install, no pip, no environment. Open the page and it is ready.
numpy, pandas and matplotlib preloaded. Upload CSVs, render figures and download results, all inline.
Your code runs entirely on your own machine. Nothing is uploaded to a server. Fast, free and yours.
How it works
Three steps. No configuration in between.
Open in any modern browser. The runtime loads once, then it is instant.
Type or paste code, or open a .py file and a data set to work with.
Press run. Output, charts and downloadable files appear beside your code.
FAQ
Yes. The workspace is free to use. Your code runs on your own device, so there is nothing for us to meter or bill.
Entirely in your browser, on a full build of CPython compiled to WebAssembly. Nothing you write or upload is sent to a server.
No. Open the page and you are running real Python in seconds. There is no pip, no environment and no configuration.
numpy, pandas and matplotlib are ready immediately. You can install most pure-Python packages from PyPI on demand.
Yes. Upload CSVs, images or any file. They become available to your script under the data folder.
Your workspace saves automatically in your browser. You can also export it to a file and import it later or on another machine.