# https://altair-viz.github.io/gallery/gantt_chart.html

import altair as alt
import pandas as pd

source = pd.DataFrame(
    [
        {"task": "A", "start": 1, "end": 3},
        {"task": "B", "start": 3, "end": 8},
        {"task": "C", "start": 8, "end": 10},
    ]
)

alt.Chart(source).mark_bar().encode(x="start", x2="end", y="task")
