It uses Flask as its web framework, and it can plug into MongoDB, SQL-Alchemy, Elasticsearch, or Neo4js back ends for data access.

As with any Python framework, it’s best to create a project using Flask inside a Python virtual environment. This isolates your project from your main Python installation and from other projects ...

Traditional frameworks like Django, Flask, and FastAPI require knowledge of multiple technologies. FastHTML allows using Python for both backend and frontend tasks, reducing complexity.

Ostrowski says the Python extension now has better debugging, building on its existing support for the web-focussed Django and Flask frameworks for Python.