Large update (#909)

* Make module declaration precise.

* Make settings match real file.

* Replace `include` with import.

* Make types more specific.

* Replace `WSGIRequest` with `HttpRequest` where possible.

* Replace all `OrderedDict` occurrences with plain `Dict` (it is not used in Django 3.2 and later)

* Add fake datastructures for convenience: _PropertyDescriptor and _ListOrTuple now can live here. Added _IndexableCollection (often useful as alias for 'sequence or queryset')

* Actualize other datastructures.

* Rework MultiValueDict to reflect the fact that some methods can return empty list instead of value.

* Deprecate SafeText in favor of SafeString.

* Minor improvements to utils

* Disallow using str in TimeFormat and DateFormat, drop removed fmt `B`

* Do not let classproperty expect classmethod, make return value covariant.

* Sync with real file.

* Improve types for timezone.

* Sync deprecated, new and removed features in translation utils.

* Drop removed files, sync huge deprecations.

* Fix incompatible decorators (properties, contextmanagers)

* Rework pagination.

* Sync validators with real code. Add _ValidatorCallable for any external use (field validation etc.)

* Add shared type definitions (for fields of both forms and models). Actualize model fields. Mark keyword-only args explicitly in stubs (where code uses **kwargs). Disallow bytes for verbose_name.

* Make all checks return Sequence[CheckMessage] or subclass to be covariant.

* Add bidirectional references between backend.base and other files. Replace some Any's with specific types.

* Actualize db.migrations: remove removed methods, replace "None" annotations in wrong places, improve some wrong annotations.

* Actualize db.utils to match real file.

* Replace FileResponse and TemplateResponse with HttpResponse(Base) where needed: at least HttpResponseNotModified/HttpResponseRedirect can be returned instead of it, so annotation was wrong.

* Replace Any in forms where possible. Actualize class bases and method arguments.

* Improve typing of serializers.

* Actualize views, rename variable bound to Model to _M for consistency.

* Make types of file-related code consistent. Disallow using bytes as path, because many methods expect str-only paths. Make File inherit from IO[AnyStr] instead of IO[Any]: it makes impossible to instantiate file of union type, but allows precise types for some methods.

* Minor improvements: stop using None as annotation in wrong places, replace obvious Any's with precise types, actualize methods (missing/renamed/signature changed).

* Allow less specific containers, replace Any's with specific types.

* Improve types for requests and responses.

* Use AbstractBaseUser instead of User in auth.

* Use broader type for permission_required

* Use wider container types. Add 'type: ignore' to avoid issues with mypy.stubtest.

* Disallow using backend class as argument (it is passed to import_string).

* Add required methods to PasseordValidator.

* Allow using Path instance as argument.

* Actualize methods.

* Add 'type: ignore' to avoid issues with mypy.stubtest.

* Replace Any's with specific types and BaseForm with ModelForm.

* Actualize contrib.postgres

* Remove render_to_response, add 'get_absolute_url' to corresponding protocol.

* Actualize signers.

* Use precise types for handlers. Disallow str as stream type for LimitedStream.

* Exact types for ValidationError

* Replace wrong used Union with Sequence.

* Actualize static handlers.

* More specific types for admin. Fixes #874.

* Improve types and replace 'Tags' with str (it isn't Enum, so annotation was wrong).

* Replace Any with specific types, actualize signatures.

* Add async variants of handlers and clients. Use fake class to distinguish between request types in RequestFactory and AsyncRequestFactory.

* Fix signature, minor improvements.

* Actualize signatures and class names, replace Any with more specific types.

* Fix signature.

* Add some missing methods to Collector

* Combinable rarely returns Self type: almost always it's CombinedExpression.

* No Random in source anymore.

* Drop removed SimpleCol.

* Replace _OutputField with Field: nothing in docs about strings.

* Introduce reusable types, add missing methods. Remove strange types (probably created by stubgen). Remove RawQuery from Compiler: it obviously doesn't work with RawQuery.

* Use literal constants.

* Actualize base classes.

* Callable is not accepted by get_field.

* Add precise types.

* Use property and broader containers where possible. Add missing methods.

* Actualize indexes.

* More specific types for signals.

* Fix signatures, drop missing methods.

* Actualize window functions to match source.

* Actualize text functions, add missing methods, use type aliases for consistency.

* Add missing property decorators, methods and attributes. Use type aliases. Remove absent YearComparisonLookup and any SafeText references (they aren't related to lookups at all).

* Use bound TypeVar, mark all BuiltinLookup descendants as generic explicitly. Remove strange Union from Lookup.__init__

* Apply type alias, fix base class and argument name.

* Actualize BaseExpression methods.

* Fix imports.

* Add missing class and fix incompatible bases.

* Use same types in __init__ and attribute.

* OrderBy accepts F or Expression.

* Non-expressions are converted to Values.

* Add missing attributes.

* Add missing methods, fix 'None' argument type.

* Define properties where possible, remove 'None' argument annotations, remove inadequate type in make_immutable_fields_list.

* Remove absent QueryWrapper. Replace some Any with precise types.

* Fix wrong types and actualize signatures. Deny ManagerDescriptor.__get__ on model instances.

* Use more specific types.

* Arity can be None in subclasses.

* Reformat with black

* Make DeletionMixin generic.

* Fix wrong type variable in _RequestFactory.

* Fix variable name in signature.

* Disallow returning None from Form.clean()

* Allow again returning None from Form.clean

* Drop some unused imports.

* Add tests for MultiValueDict.

* Add tests for utils.timezone.

* Fix #834.

* Add more files to import_all test

* Allow None for `context_object_name`

* Fix CI

* Fix test to work on python 3.8

django_stubs_ext/django_stubs_ext/patch.py

@@ -3,12 +3,14 @@ from typing import Any, Generic, List, Optional, Tuple, Type, TypeVar
 from django import VERSION as VERSION
 from django.contrib.admin import ModelAdmin
 from django.contrib.admin.options import BaseModelAdmin
+from django.core.paginator import Paginator
 from django.db.models.fields import Field
 from django.db.models.manager import BaseManager
 from django.db.models.query import QuerySet
-from django.forms.models import BaseModelForm
+from django.forms.formsets import BaseFormSet
+from django.forms.models import BaseModelForm, BaseModelFormSet
 from django.views.generic.detail import SingleObjectMixin
-from django.views.generic.edit import FormMixin
+from django.views.generic.edit import DeletionMixin, FormMixin
 from django.views.generic.list import MultipleObjectMixin
 
 _T = TypeVar("_T")
@@ -16,7 +18,7 @@ _VersionSpec = Tuple[int, int]
 
 
 class MPGeneric(Generic[_T]):
-    """Create a data class to hold metadata about the gneric classes needing monkeypatching.
+    """Create a data class to hold metadata about the generic classes needing monkeypatching.
 
     The `version` param is optional, and a value of `None` means that the monkeypatch is
     version-independent.
@@ -42,10 +44,14 @@ _need_generic: List[MPGeneric[Any]] = [
     MPGeneric(ModelAdmin),
     MPGeneric(SingleObjectMixin),
     MPGeneric(FormMixin),
+    MPGeneric(DeletionMixin),
     MPGeneric(MultipleObjectMixin),
     MPGeneric(BaseModelAdmin),
     MPGeneric(Field),
+    MPGeneric(Paginator),
+    MPGeneric(BaseFormSet),
     MPGeneric(BaseModelForm),
+    MPGeneric(BaseModelFormSet),
     # These types do have native `__class_getitem__` method since django 3.1:
     MPGeneric(QuerySet, (3, 1)),
     MPGeneric(BaseManager, (3, 1)),