hey! so for hosting python backend on railwa, here's what actually works: main thing **is** use a production server like gunicorn (for flask/django) or uvicorn (for fastapi). don't use the dev server in production. to set it up add gunicorn to your requirements.txt, then set your start command directly in railway's service settings. something like: ``` gunicorn app:app ``` or for fastapi: ``` uvicorn main:app --host 0.0.0.0 --port $PORT ``` you can also use a Procfile but railway recommends just setting it in the dashboard now important stuff: * always use the `$PORT` environment variable that railway provides * keep requirements.txt up to date * turn debug off for production * use railway's environment variables for any secrets/api keys * if you need a database, add postgres from railway's database service **what you need:** * requirements.txt (or pyproject.toml) * your main python files * that's basically it railway auto-detects everything for you. just connect your github repo, railway figures out it's python, and deploys it. way simpler than it used to be. then just generate a domain in the networking settings and you're live. hope this help you