# Copyright 2026 Marimo. All rights reserved.

import marimo

__generated_with = "0.2.6"
app = marimo.App()


@app.cell
def __():
    import marimo as mo

    mo.md("# Welcome to [marimo](https://github.com/marimo-team/marimo)! 🌊🍃")
    return mo,


@app.cell(hide_code=True)
def __(mo):
    mo.md(
        """
        **This marimo notebook is powered by [WASM](https://webassembly.org/)**:
        it's running entirely in your browser!

        """
    ).callout()
    return


@app.cell(hide_code=True)
def __(mo):
    mo.accordion(
        {
            "When should I use WASM notebooks?": """
            WASM notebooks are excellent for sharing:
            because they run entirely in the browser, they are extremely
            easy to share. Just open the notebook action menu at the top-right and
            click the "Share WASM notebook" button to get a shareable URL. You can
            also embed your notebook in other webpages via an `<iframe>`.

            WASM notebooks are well-suited for quickly experimenting with code
            and models, doing lightweight data analysis, authoring blog
            posts, tutorials, and educational articles, and even building internal
            tools. They are not well-suited for notebooks that do heavy
            computation, and they don't support multi-threading nor
            multiprocessing; for these cases, use a regular marimo notebook.
            """
        }
    )
    return


@app.cell(hide_code=True)
def __(mo):
    mo.accordion(
        {
            "Installing packages in WASM notebooks": mo.md(
                """
        Many packages will be automatically installed,
        These can be found at [packages-in-pyodide](https://pyodide.org/en/stable/usage/packages-in-pyodide.html).

        For other packages, use micropip:

        ```python
        import micropip
        await micropip.install("plotly")
        import plotly
        ```
        """
            )
        }
    )
    return


@app.cell
def __(mo):
    slider = mo.ui.slider(1, 22)
    return slider,


@app.cell
def __(mo, slider):
    mo.md(
        f"""
        marimo is a **reactive** Python notebook.

        This means that unlike traditional notebooks, marimo notebooks **run
        automatically** when you modify them or
        interact with UI elements, like this slider: {slider}.

        {"##" + "🍃" * slider.value}
        """
    )
    return


@app.cell(hide_code=True)
def __(mo):
    mo.md(
        """
        ## 1. Reactive execution

        A marimo notebook is made up of small blocks of Python code called
        cells.

        marimo reads your cells and models the dependencies among them: whenever
        a cell that defines a global variable  is run, marimo
        **automatically runs** all cells that reference that variable.

        Reactivity keeps your program state and outputs in sync with your code,
        making for a dynamic programming environment that prevents bugs before they
        happen.
        """
    )
    return


@app.cell(hide_code=True)
def __(changed, mo):
    (
        mo.md(
            f"""
            **✨ Nice!** The value of `changed` is now {changed}.

            When you updated the value of the variable `changed`, marimo
            **reacted** by running this cell automatically, because this cell
            references the global variable `changed`.

            Reactivity ensures that your notebook state is always
            consistent, which is crucial for doing good science; it's also what
            enables marimo notebooks to double as tools and  apps.
            """
        )
        if changed
        else mo.md(
            """
            **🌊 See it in action.** In the next cell, change the value of the
            variable  `changed` to `True`, then click the run button.
            """
        )
    )
    return


@app.cell
def __():
    changed = False
    return changed,


@app.cell(hide_code=True)
def __(mo):
    mo.accordion(
        {
            "Tip: execution order": (
                """
                The order of cells on the page has no bearing on
                the order in which cells are executed: marimo knows that a cell
                reading a variable must run after the cell that  defines it. This
                frees you to organize your code in the way that makes the most
                sense for you.
                """
            )
        }
    )
    return


@app.cell(hide_code=True)
def __(mo):
    mo.md(
        """
        **Global names must be unique.** To enable reactivity, marimo imposes a
        constraint on how names appear in cells: no two cells may define the same
        variable.
        """
    )
    return


@app.cell(hide_code=True)
def __(mo):
    mo.accordion(
        {
            "Tip: encapsulation": (
                """
                By encapsulating logic in functions, classes, or Python modules,
                you can minimize the number of global variables in your notebook.
                """
            )
        }
    )
    return


@app.cell(hide_code=True)
def __(mo):
    mo.accordion(
        {
            "Tip: private variables": (
                """
                Variables prefixed with an underscore are "private" to a cell, so
                they can be defined by multiple cells.
                """
            )
        }
    )
    return


@app.cell(hide_code=True)
def __(mo):
    mo.md(
        """## 2. UI elements

        Cells can output interactive UI elements. Interacting with a UI
        element **automatically triggers notebook execution**: when
        you interact with a UI element, its value is sent back to Python, and
        every cell that references that element is re-run.

        marimo provides a library of UI elements to choose from under
        `marimo.ui`.
        """
    )
    return


@app.cell
def __(mo):
    mo.md("**🌊 Some UI elements.** Try interacting with the below elements.")
    return


@app.cell
def __(mo):
    icon = mo.ui.dropdown(["🍃", "🌊", "✨"], value="🍃")
    return icon,


@app.cell
def __(icon, mo):
    repetitions = mo.ui.slider(1, 16, label=f"number of {icon.value}: ")
    return repetitions,


@app.cell
def __(icon, repetitions):
    icon, repetitions
    return


@app.cell
def __(icon, mo, repetitions):
    mo.md("# " + icon.value * repetitions.value)
    return


@app.cell(hide_code=True)
def __(mo):
    mo.md(
        """
        ## 3. marimo is just Python

        marimo cells parse Python (and only Python), and marimo notebooks are
        stored as pure Python files — outputs are _not_ included. There's no
        magical syntax.

        The Python files generated by marimo are:

        - easily versioned with git, yielding minimal diffs
        - legible for both humans and machines
        - formattable using your tool of choice,
        - usable as Python  scripts, with UI  elements taking their default
        values, and
        - importable by other modules (more on that in the future).
        """
    )
    return


@app.cell(hide_code=True)
def __(mo):
    mo.md(
        """
        ## 4. Running notebooks as apps

        marimo notebooks can double as apps. Click the app window icon in the
        bottom-right to see this notebook in "app view."

        Serve a notebook as an app with `marimo run` at the command-line.
        Of course, you can use marimo just to level-up your
        notebooking, without ever making apps.
        """
    )
    return


@app.cell(hide_code=True)
def __(mo):
    mo.md(
        """## 5. The `marimo` command-line tool

        **Creating and editing notebooks.** Use

        ```
        marimo edit
        ```

        in a terminal to create a new marimo notebook, or

        ```
        marimo edit notebook.py
        ```

        to create/edit a notebook called `notebook.py`.

        **Running as apps.** Use

        ```
        marimo run notebook.py
        ```

        to start a webserver that serves your notebook as an app in read-only mode,
        with code cells hidden.

        **Convert a Jupyter notebook.** Convert a Jupyter notebook to a marimo
        notebook using `marimo convert`:

        ```
        marimo convert your_notebook.ipynb > your_app.py
        ```

        **Tutorials.** marimo comes packaged with tutorials:

        - `dataflow`: more on marimo's automatic execution
        - `ui`: how to use UI elements
        - `markdown`: how to write markdown, with interpolated values and
           LaTeX
        - `plots`: how plotting works in marimo
        - `sql`: how to use SQL
        - `layout`: layout elements in marimo
        - `fileformat`: how marimo's file format works
        - `markdown-format`: for using `.md` files in marimo
        - `for-jupyter-users`: if you are coming from Jupyter

        Start a tutorial with `marimo tutorial`; for example,

        ```
        marimo tutorial dataflow
        ```

        In addition to tutorials, we have examples in our
        [our GitHub repo](https://www.github.com/marimo-team/marimo/tree/main/examples).
        """
    )
    return


@app.cell(hide_code=True)
def __(mo):
    mo.md(
        """
        ## 6. The marimo editor

        Here are some tips to help you get started with the marimo editor.
        """
    )
    return


@app.cell
def __(mo, tips):
    mo.accordion(tips)
    return


@app.cell
def __(mo):
    mo.md("## Finally, a fun fact")
    return


@app.cell(hide_code=True)
def __(mo):
    mo.md(
        """
        The name "marimo" is a reference to a type of algae that, under
        the right conditions, clumps together to form a small sphere
        called a "marimo moss ball". Made of just strands of algae, these
        beloved assemblages are greater than the sum of their parts.
        """
    )
    return


@app.cell(hide_code=True)
def __():
    tips = {
        "Saving": (
            """
            **Saving**

            - _Name_ your app using the box at the top of the screen, or
              with `Ctrl/Cmd+s`. You can also create a named app at the
              command line, e.g., `marimo edit app_name.py`.

            - _Save_ by clicking the save icon on the bottom left, or by
              inputting `Ctrl/Cmd+s`. By default marimo is configured
              to autosave.
            """
        ),
        "Running": (
            """
            1. _Run a cell_ by clicking the play ( ▷ ) button on the bottom
            right of a cell, or by inputting `Ctrl/Cmd+Enter`.

            2. _Run a stale cell_  by clicking the yellow run button to the
            right of the cell, or by inputting `Ctrl/Cmd+Enter`. A cell is
            stale when its code has been modified but not run.

            3. _Run all stale cells_ by clicking the play ( ▷ ) button on
            the bottom right of the screen, or input `Ctrl/Cmd+Shift+r`.
            """
        ),
        "Console Output": (
            """
            Console output (e.g., `print()` statements) is shown below a
            cell.
            """
        ),
        "Creating, Moving, and Deleting Cells": (
            """
            1. _Create_ a new cell above or below a given one by clicking
                the plus button to the left of the cell, which appears on
                mouse hover.

            2. _Move_ a cell up or down by dragging on the handle to the
                right of the cell, which appears on mouse hover.

            3. _Delete_ a cell by clicking the trash bin icon. Bring it
                back by clicking the undo button on the bottom right of the
                screen, or with `Ctrl/Cmd+Shift+z`.
            """
        ),
        "Disabling Cells": (
            """
            You can disable a cell via the cell context menu (open it
            by clicking the icon to the right of a cell). marimo will
            never run a disabled cell or any cells that depend on it. This
            can help prevent accidental execution of expensive computations
            when editing a notebook.
            """
        ),
        "Code Folding": (
            """
            You can collapse or fold the code in a cell by clicking the arrow
            icons in the line number column to the left, or by using keyboard
            shortcuts.

            Use the command palette (`Ctrl/Cmd+k`) or a keyboard shortcut to
            quickly fold or unfold all cells.
            """
        ),
        "Code Formatting": (
            """
            If you have [ruff](https://github.com/astral-sh/ruff) installed,
            you can format a cell with the keyboard shortcut `Ctrl/Cmd+b`.
            """
        ),
        "Command Palette": (
            """
            Use `Ctrl/Cmd+k` to open the command palette.
            """
        ),
        "Keyboard Shortcuts": (
            """
            Click the keyboard button on the bottom left of the screen (or
            input `Ctrl/Cmd+Shift+h`) to view a list of all keyboard
            shortcuts.
            """
        ),
        "Configuration": (
            """
           Configure the editor by clicking the gears icon near the top-right
           of the screen.
           """
        ),
    }
    return tips,


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