Flask is a web application framework written in Python. It uses Jinja for creating templates, which allow for dynamicly creating webpages based on a common pattern. For example, this technique allows the LMFDB to contain millions of pages, with each being created from dozens of templates by filling in data from an underlying PostgreSQL database.

This page is a stub. If you are interested in writing a better version, please contact an editor or submit a pull request.