.PY

Introduction

marimo is an open-source notebook for Python that saves each notebook as an ordinary Python source file rather than a JSON document like a Jupyter notebook. The file can be read and changed in any editor, compared line by line in version control, imported as a module and run as a script.

marimo notebooks are reactive: marimo works out which variables each cell defines and uses, and when a cell changes it runs the cells that depend on it. Outputs are not saved in the file.

Structure

The file imports marimo and creates an App. Each cell is a function decorated with @app.cell: its parameters are the variables it uses from other cells, and it returns the variables it defines. The file ends by running the app when it is executed as a script. A line near the top records the marimo version that wrote it.

import marimo

__generated_with = "0.10.0"
app = marimo.App()


@app.cell
def _():
    n = 5
    return (n,)


@app.cell
def _(n):
    squares = [i * i for i in range(n)]
    squares
    return (squares,)


if __name__ == "__main__":
    app.run()

Also used for

• Python source code .py

Links