Is plotly express timeline down?

[Addb]

Hello,

I can’t make plots on streamlit using the px.timeline, even using the basic dummy data this is always returning

TypeError: Object of type timedelta is not JSON serializable

import plotly.express as px
import pandas as pd

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

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

[Skiks]

Hi @Addb !

Welcome on the forum!

Nothing is wrong with px.timeline()

I’ve never used streamlit, but using this snippet locally, I get:

I used it a couple of weeks ago to help someone:

Gantt chart (px.timeline) with subplot with opacity and filtering implementation

Hello! I have a problem. I need to make a gantt chart as shown in this image: [image] Also, i need to implement a filtering system, like on this picture: [image] The filter selected in the dropdown menu is highlighted on the diagram, and the rest become transparent (keeping the color) . And all this should work through the callback. Without thinking twice, I did the following: @app.callback( Output('timeline-output', 'figure'), State('dropdown-input', 'value'), Input('dropd…

I would say that’s coming from streamlit.
Try print(fig) before st.plotly_chart(fig) to see what px.timeline() outputs.

[KerPop47]

Interesting. I’ve had the same error, in my post here:

Px.timeline converts x-axis to unusable timedelta type

Even if I just copy and paste the example code from the timeline page, I get: TypeError: Object of type timedelta is not JSON serializable. Example code: import plotly.express as px import pandas as pd df = pd.DataFrame([ dict(Task="Job A", Start='2009-01-01', Finish='2009-02-28'), dict(Task="Job B", Start='2009-03-05', Finish='2009-04-15'), dict(Task="Job C", Start='2009-02-20', Finish='2009-05-30') ]) fig = px.timeline(df, x_start="Start", x_end="Finish", y="Task") fig.update…

But running that snippet now in my console, I get no error.

[Skiks]

Programming can be a mystery sometime !
But I prefer a working mystery than a not working mystery !