How do you deploy a Django or Flask app on Heroku or any server?

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To deploy a Django or Flask app on Heroku, follow these general steps. Heroku is a cloud platform that supports easy deployment for Python web apps.

1. Prepare the App

Common for Both:

  • Ensure your app is in a Git repository.

  • Create a requirements.txt file:

Add a Procfile (no extension) to tell Heroku how to run your app:

  • Django

  • Flask:

Django-Specific:

  • Set ALLOWED_HOSTS = ['*'] or the Heroku domain in settings.py.

  • Configure static files using whitenoise.

  • Set DEBUG = False in production.

  • Add the gunicorn and whitenoise packages to requirements.txt.

2. Create runtime.txt

Specify Python version:

3. Initialize Git (if not already)

4. Deploy to Heroku

  1. Install Heroku CLI and log in:

  2. Create the Heroku app:

  3. Add Heroku Postgres (for Django):

  4. Push code to Heroku:

  5. Run migrations (Django):

Your app is now live at https://your-app-name.herokuapp.com.

Read More

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