marimo-toml-editor
An interactive TOML config editor widget for Jupyter and marimo notebooks — built with anywidget.
Features
- 🗂 Tab-per-table navigation — each top-level TOML table is a tab
- ✏️ Type-aware editors — strings, numbers, booleans (toggle), colors (color picker + hex field)
- 📋 Rich list editor — per-item rows with reorder (↑↓) and delete
- 🪆 Inline dict editor — shallow nested tables rendered as compact key-value rows
- 🏷 Type badges — each key shows its type at a glance (
str,int,bool,[],{}) - 🔍 Search / filter — filter keys within a tab
- ↩ Undo / Redo — full history
- 💾 Save to disk — requires
tomli-w - 🌗 Light + dark mode — follows system preference
Install
pip install marimo-toml-editor # read-only
pip install "marimo-toml-editor[save]" # with save support (tomli-w)
Usage
In marimo
import marimo as mo
from marimo_toml_editor import TomlConfigEditor
editor = mo.ui.anywidget(TomlConfigEditor("config.toml"))
editor
Access the current data reactively:
editor.value["data"] # dict with the current TOML contents
In Jupyter
from marimo_toml_editor import TomlConfigEditor
w = TomlConfigEditor("config.toml")
w
Start from a dict (no file)
from marimo_toml_editor import TomlConfigEditor
w = TomlConfigEditor()
w.data = {
"title": "My App",
"debug": False,
"server": {"host": "0.0.0.0", "port": 8080},
"tags": ["web", "api"],
}
API
| Attribute | Type | Description |
|---|---|---|
data |
dict |
Current TOML data (synced) |
path |
str |
File path (synced) |
name |
str |
Display name (synced) |
status |
str |
Last operation status message |
| Method | Description |
|---|---|
load(path) |
Load a TOML file |
save(path?) |
Save to disk (requires tomli-w) |
Development
git clone https://github.com/javirm3/marimo-toml-editor
cd marimo-toml-editor
uv run marimo edit examples/demo.py
License
MIT
1 maintainer
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