Is Flask a Web server?

Although Flask has a built-in web server , as we all know, it’s not suitable for production and needs to be put behind a real web server able to communicate with Flask through a WSGI protocol. A common choice for that is Gunicorn—a Python WSGI HTTP server.

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What is Flask REST?

Flask-RESTful¶ Flask-RESTful is an extension for Flask that adds support for quickly building REST APIs . It is a lightweight abstraction that works with your existing ORM/libraries. Flask-RESTful encourages best practices with minimal setup.

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