Type Check your Django app [EuroPython 2021 - Talk - 2021-07-28 - Ni] [Online] By Kracekumar Python 3 introduced type hints and it's optional to use. The decision to use the type-hints in the python community is in two different camps - Embrace and skeptical. Adding type-hints has practical problems. One such example is the working of type-checker, mypy, and CPython interpreter. mypy behaves like a statically typed language (strict with type declaration and modification) whereas Python run-time is lenient. Example a: int = 23 a = 'Django' Mypy will complain about the above code whereas Python run-time will not complain. In this talk, I'll cover the following topics: - how to add type-hints to Django project - views, models, and queryset. - Tools to help to add type-hints. - Adding type-hints to user-defined code. - Current limitation of the type-hints. - Tuning mypy to suit your needs - strict and lenient checking. All the example code snippets will run on Python 3.9.4+. References: - Type Hints: https://docs.python.org/3/library/typing.html - Mypy - http://mypy-lang.org/ - Django: https://www.djangoproject.com/ - Django Stubs - https://github.com/TypedDjango/django-stubs - Django Restframeowrk - https://www.django-rest-framework.org/ - Django Restframework stubs - https://github.com/typeddjango/djangorestframework-stubs License: This video is licensed under the CC BY-NC-SA 4.0 license: https://creativecommons.org/licenses/by-nc-sa/4.0/ Please see our speaker release agreement for details: https://ep2021.europython.eu/events/speaker-release-agreement/