organizing-streamlit-code

To organize Streamlit code, separate UI components from business logic by creating app_pages and utils directories, moving relevant code into these modules, and updating imports to improve maintainability and scalability.

Separating UI and business logic in a Streamlit app involves moving your processing functions into a utils module while keeping your Streamlit file focused on rendering, which ensures cleaner code architecture and easier testing.

A Streamlit multi-page app needs modular code to prevent a single-file prototype from becoming unmaintainable, allowing you to scale features by distributing logic across dedicated app_pages and utils modules.

You can refactor a large single-file Streamlit prototype by auditing the code, creating app_pages and utils directories, relocating functions, and adjusting imports to transition into a modular application.

Streamlit modular architecture avoids placing main guards in UI modules, instead requiring you to update imports correctly and run the application from a central streamlit_app.py file to manage execution flow.