Hey! We’re not supporting Python 3.13 right now since we’re waiting on pyarrow to support it. It’s merged on their side but we still need to wait for the next release. As soon as that’s done, we’ll work on supporting it in Streamlit (which should be pretty quick).
I have been using streamlit with python 3.13 for some time now. As far as I can tell everything works as expected except altair plots, which is an altair issue and should be fixed in the next altair release.
On 3.13, the demo for Dataframes and Plotting are broken when running ‘streamlit hello’ were some of the specific things at first glance that did not work correctly. Does Altair also affect the dataframe demo?