Deploying Python WSGI Applications on Managed Shared Hosting
A production guide for deploying Python WSGI applications on managed shared hosting platforms using Flask, Passenger, clean routing, predictable directory structures, and efficient static asset delivery.
Engineering abstract
Reliable Python deployments on managed hosting depend on a clean WSGI configuration, predictable application structure, properly configured static assets, minimal rewrite rules, and consistent deployment practices rather than hosting-specific workarounds.
Passenger basics
cPanel Python apps commonly use Passenger to run Flask. The key file is passenger_wsgi.py.
from app import app as application
Keep routing simple
Avoid old WordPress rules in .htaccess. They can redirect Flask routes to index.php and break dynamic post URLs.
Static files
If /static/css/style.css returns 404, confirm whether the domain document root is different from the Flask application root.
Deployment checklist
- Confirm application root.
- Confirm startup file.
- Confirm entry point.
- Install requirements.
- Restart the Python app.
- Test
/debug-posts.