Documenting new features
Resolve errors and performance issues
Creating design specifications based on requirements for new and existing products
Proof of concept and prototyping
Open-source project, Django battery.
PostgreSQL is one of the most advanced good old SQL databases, covering a huge spectrum of tasks and showing outstanding performance. PL/Python plugin allows writing stored procedures in Python.
Django integrates with PostgreSQL over its amazing contrib module and supports many of those modern features, but not PL/Python. My last library, Django-plpy, closes this gap.
PostgreSQL's PL/Python plugin allows you to write stored procedures in Python. Django-plpy provides utilities and commands for using python functions from your project within Django ORM and more.