Mypy stubs for Django
pep484 stubs for Django framework
This package contains type stubs and mypy plugin to provide more precise static types and type inference for Django framework. Django uses some Python "magic" that makes having precise types for some code patterns problematic. This is why we need to accompany the stubs with mypy plugins. The final goal is to be able to get precise types for most common patterns.
Could be run on earlier versions of Django, but expect some missing imports warnings.
pip install django-stubs
|django-stubs||mypy version||django version||python version|
|0.12.x||old semantic analyzer (<0.711), dmypy support||2.1.x||^3.6|
To make mypy aware of the plugin, you need to add
[mypy] plugins = mypy_django_plugin.main
Plugin also requires Django settings module (what you put into
DJANGO_SETTINGS_MODULE variable) to be specified.
[mypy] strict_optional = True # This one is new: [mypy.plugins.django-stubs] django_settings_module = mysettings
mysettings is a value of
DJANGO_SETTINGS_MODULE (with or without quotes)
Current implementation uses Django runtime to extract models information, so it will crash, if your installed apps
models.py is not correct. For this same reason, you cannot use
reveal_type inside global scope of any Python file that will be executed for
In other words, if your
manage.py runserver crashes, mypy will crash too.
This fully working typed boilerplate can serve you as an example.
Type implementation monkey-patches Django to add
__class_getitem__ to the
If you would use Python3.7 and do that too in your code, you can make things like
class MyUserManager(models.Manager['MyUser']): pass class MyUser(models.Model): objects = MyUserManager()
work, which should make a error messages a bit better.
Otherwise, custom type will be created in mypy, named
MyUser__MyUserManager, which will rewrite base manager as
models.Manager[User] to make methods like
get_queryset() and others return properly typed
To get help
We have Gitter here: https://gitter.im/mypy-django/Lobby
If you think you have more generic typing issue, please refer to https://github.com/python/mypy and their Gitter.
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