Running STREAMLIT with PYTHON 3.9 on Mac OS Catalina

[JIM]

Hi,

quite new in Streamlit and Python. So just downloaded last version and it doesn’t work at all. Any clues ?

[randyzwitch]

Hi @JIM, welcome to the Streamlit community!

Streamlit is currently blocked from supporting Python 3.9 by pyarrow:

Note: installation issues with Python 3.9 and Streamlit

Hi everyone - We’re starting to selectively see reports about using Python 3.9 with Streamlit with pip, with compiler errors like the following: We’ve been evaluating this internally and believe the issue is due to issues with pyarrow when installed from PyPI (i.e. via pip). If you must use Python 3.9 right now, you can work around this issue using conda: conda create -n streamlitpy39 -c conda-forge python=3.9 pyarrow=1.0 -y conda activate streamlitpy39 pip install streamlit (streamlitpy39…

Best,
Randy

[randyzwitch]

A recipe was just added to conda-forge for Streamlit, so you could also try this:

conda create -n st39 -c conda-forge python=3.9 streamlit -y