streamlit-arborist v0.4.0

Checkbox-based tree selection for Streamlit

open-source
python
Author

Gabriel Mello Silva

Published

June 19, 2026

Release 0.4.0 introduces tree_checkbox(), a new component for checkbox-based selection in tree data.

pip install 'streamlit-arborist>=0.4.0'

tree_checkbox() component in Streamlit

Selection follows parent/child cascading semantics, so checking a parent can select descendants and partial states are handled automatically.

Experiment with the new component in your Streamlit app by running the following code snippet:

from streamlit_arborist import tree_checkbox

data = [
    {"id": "1", "name": "Unread"},
    {"id": "2", "name": "Threads"},
    {
        "id": "3",
        "name": "Chat Rooms",
        "children": [
            {"id": "c1", "name": "General"},
            {"id": "c2", "name": "Random"},
            {"id": "c3", "name": "Open Source Projects"},
        ],
    },
    {
        "id": "4",
        "name": "Direct Messages",
        "children": [
            {"id": "d1", "name": "Alice"},
            {"id": "d2", "name": "Bob"},
            {"id": "d3", "name": "Charlie"},
        ],
    },
]

tree_checkbox(data, icons={"open": "📂", "closed": "📁", "leaf": "📄"})