Deploy a Python application on onesubnet

onesubnet runs your Python applications (Flask, Django, FastAPI, scripts, bots…). Deploy via Git from the panel.

1. Prepare the project

• List dependencies in requirements.txt (or pyproject.toml).
• Make your app listen on the port from the PORT environment variable:

import os
port = int(os.environ.get("PORT", 8000))
app.run(host="0.0.0.0", port=port)

2. Deploy

1. In the panel, connect your Git repository (or upload the code).
2. Build command: pip install -r requirements.txt
3. Start command (per framework):
   • FastAPI: uvicorn app:app --host 0.0.0.0 --port $PORT
   • Flask: gunicorn app:app -b 0.0.0.0:$PORT
   • Django: gunicorn myproject.wsgi -b 0.0.0.0:$PORT

3. Environment variables

Set DATABASE_URL, secrets, etc. in Settings → Environment in the panel.

4. Logs

Live console and log files in the panel to diagnose a startup crash.

References

• Python: https://docs.python.org/3/
• Gunicorn: https://docs.gunicorn.org/
• Uvicorn: https://www.uvicorn.org/