Flask

Flask is the flexible Python microframework: build web applications, APIs, and microservices fast with minimal boilerplate code.

Flask is a Python-based microframework, intentionally shipping without mandatory tools like a database abstraction layer or form validation, giving developers maximum control. Its core relies on the Werkzeug WSGI toolkit and the Jinja2 template engine for routing and templating. This minimalistic design makes it ideal for rapid development of small-to-medium projects, including RESTful APIs and modern microservices. Since its 2010 release by Armin Ronacher, its extensibility via community-maintained extensions has ensured its consistent popularity and ability to scale up effectively.

https://palletsprojects.com/p/flask/