You probably already know but you can add type hints and then check for consistency with https://github.com/python/mypy https://github.com/python/mypy in python

You probably already know but you can add type hints and then check for consistency with https://github.com/python/mypy https://github.com/python/mypy in python. Modern Python with things like https://learnpython.com/blog/python-match-case-statement/ https://learnpython.com/blog/python-match-case-statement/ + mypy + Ruff for linting https://github.com/astral-sh/ruff https://github.com/astral-sh/ruff can get pretty good results. I found typed dataclasses (https://docs.python.org/3/library/dataclasses.html https://docs.python.org/3/library/dataclasses.html) in python using mypy to give me really high confidence when building data representations. And there's https://pypi.org/project/django-stubs/ https://pypi.org/project/django-stubs/ for working with Django.