ModuleNotFoundError: No module named 'streamlit'

[dataprofessor]

Hi @Sonja

Thanks for your question, we actually have an FAQ post on this topic:

FAQ: ModuleNotFoundError

Problem When you run your app locally or on Streamlit Community Cloud, you see an error message that starts with ModuleNotFoundError. Solution If you’re running your app locally, you’re seeing this error message because you haven’t installed all the dependencies used by your app. Use pip or your package manager of choice to install the packages used by your app (you can also add a list of your app’s dependencies to a requirements.txt file and run pip install -r requirements.txt to install them …