Flask and Django are the two most used web frameworks in Python. Which one you pick depends on how much you want the framework to decide for you.

Django gives you the whole project layout, including an admin panel and a migration system. Flask gives you the routing and the template engine and leaves the rest to you.

Here is how the two differ.

Flask and Django: A Comparative Analysis

Both are written in Python and both handle requests and serve pages. What differs is how much each one takes on.

Here are the main differences.

  • Forms: Django includes an Object Relational Mapper (ORM) and an admin interface. Flask, on the other hand, lacks built-in form support, although it’s possible to integrate WTForms for form functionalities.

Flask Forms

  • Database: Django has its own ORM and a migration system for efficient database management. In contrast, Flask refrains from making database assumptions. Yet, utilities like SQLAlchemy can provide Flask with similar database capabilities.

  • Authentication & Permissions: Django offers user management and authentication permissions. Meanwhile, Flask employs cookies and sessions, leaving more room for custom implementation.

  • Admin Interface: Unlike Django, Flask doesn’t offer an out-of-the-box admin interface. However, the Flask-Admin extension can be employed to establish a comparable administrative platform.

Flask Admin

  • Flexibility: Flask shines in its full control, allowing developers to design their app structure from scratch. Django, though powerful, is more opinionated and less malleable in its design approach.

Highlighting the Common Ground

At their core, Flask and Django share several fundamental similarities:

  • Python-Powered Web Frameworks: Both Flask and Django enable developers to use Python for backend logic while employing HTML and CSS for frontend design.

  • Object Mapping Support: Both frameworks support either ORM or similar object-mapping functionalities. They can operate with databases like SQLITE, MYSQL, and PostgreSQL. While Django incorporates ORM as a standard feature, Flask requires manual integration for ORM capabilities.

  • Template Systems: Both Flask and Django offer template engines. Flask employs the Jinja template system, while Django provides a comparable solution.

Final Thoughts

Flask and Django each have their sets of merits and limitations. For less intricate web applications, Flask might be the preferred choice.

For beginners eager to explore web development with Python, starting with Flask might be advantageous due to its simplicity. As you grow and understand more about web frameworks, transitioning to Django is easy, building upon the foundation laid by Flask.

The fastest way to learn this is to write it yourself. The PyChallenge exercises run in your browser, no install needed.