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A reactive notebook for Python — run reproducible experiments, execute as a script, deploy as an app, and version with git.

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### Describe the bug Hello, the pagination controls for mo.ui.data_editor show a unicode replacement character instead of the arrows in Firefox. For normal DataFrames, it works fine: ![Image](https://github.com/user-attachments/assets/bac43d9a-ab24-4a66-b9fb-24706f8b4d75) ![Image](https://github.com/user-attachments/assets/3829d462-0f0d-463a-ac80-902c62e7e2e4) ###...

bug

### Description Hi guys, modern version of Neovim and at least a few Vim emulators (VSCode Vim for example) now support the very convenient `gc` motion for toggling comments. ###...

enhancement

### Describe the bug Steps to reproduce 1. Create a cell 2. Change its type to Markdown 3. Add md content 4. save notebook 5. close / power off notebook...

bug
cannot reproduce

### Description I would like to save the collapsed state of a markdown header. ### Suggested solution Add an argument to the `app.cell` decorator. ``` @app.cell(collapsed=True) def _(mo): mo.md(r"""### Setup""")...

enhancement
help wanted

### Describe the bug After using the editor for a bit, the editor stops working. This messages appears in the terminal: ![Image](https://github.com/user-attachments/assets/0e377521-6bda-476b-a757-fdccedc02a50) I'm unable to save notebooks, this message appears...

bug
cannot reproduce

### Describe the bug When you switch to full-screen mode for altair charts, the tooltips stop working. ### Environment ``` { "marimo": "0.13.0", "OS": "Darwin", "OS Version": "24.1.0", "Processor": "arm",...

bug
upstream

### Description We have `claude-3-7-sonnet` model behind LiteLLM https://github.com/BerriAI/litellm which exposes OpenAI format API. However, currently based on ![Image](https://github.com/user-attachments/assets/8a9b1668-fcf1-4c0e-a4ea-6ff9b08226c7) > If the model starts with "claude-", we will use your...

enhancement

### Describe the bug Hey guys so I'm trying to export a static html page from a relatively small (~300 lines) notebook. The notebook page servers fast and if I...

bug

This is an enhancement proposal similar to the already existing inline "Stop" functionality already implemented in the "Generate with AI" modal.

help wanted

### Description I'm proposing to extend `Expand Dict` dataframe transformation that implements Polars' column unnest functionality. Currently, marimo has an `Expand Dict` feature, but it fails when a column contains...

enhancement
help wanted