In a Plotly timeline Gantt chart, how to have each y-axis category ("task") in a new line, even for repeating tasks? (ungrouped tasks)

📊 Plotly Python
1

I’d like to have a functionality similar to the deprecated create_gant() figure factory option group_tasks = False, which forces each tasks in the input data frame into its own line in the y-axis, even for repeating tasks.

To illustrate what I mean, the code below produces one single line in the y-axis “Job A” for “Alex”, and puts two bars on this line in the given start-end time.

import plotly.express as px
import pandas as pd

df = pd.DataFrame([
    dict(Task="Job A", Start='2009-01-01', Finish='2009-02-28', Resource='Alex'),
    dict(Task="Job B", Start='2009-03-05', Finish='2009-04-15', Resource='Max'),
    dict(Task="Job C", Start='2009-02-20', Finish='2009-05-30', Resource='Max'),
    dict(Task="Job A", Start='2009-03-02', Finish='2009-05-30', Resource='Alex')
])

fig = px.timeline(df, x_start="Start", x_end="Finish", y="Task", color = "Resource")
fig.update_yaxes(autorange="reversed") # otherwise tasks are listed from the bottom up
fig.show()

Produces:

jl7IX
jl7IX1885×825 6.19 KB

I’d like:

jltZa
jltZa1879×803 6.45 KB

I tried different arguments for fig.update_yaxes(categoryorder = "") to no avail.
I also posted this question in stackoverflow