smach, 
Ari Lamstein says his "Visualizing the Impact of Covid-19 on US Counties" blog post may be of interest if you want to "learn how to build data apps in Python, as the entire project is released under a permissive license (MIT), and is publicly available on GitHub."
Post: https://arilamstein.com/blog/2024/05/04/visualizing-the-impact-of-covid-19-on-us-counties/
Streamlit app: https://census-explorer.streamlit.app/
GitHub repo: https://github.com/arilamstein/censusdis-streamlit/tree/main