first version finished

django/views/generic/edit.pyi

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+from django.core.handlers.wsgi import WSGIRequest
+from django.db.models.base import Model
+from django.forms.forms import (
+    BaseForm,
+    Form,
+)
+from django.forms.models import ModelForm
+from django.http.response import HttpResponseRedirect
+from django.template.response import TemplateResponse
+from django.utils.datastructures import MultiValueDict
+from typing import (
+    Any,
+    Dict,
+    Optional,
+    Type,
+    Union,
+)
+
+
+class BaseCreateView:
+    def get(
+        self,
+        request: WSGIRequest,
+        *args,
+        **kwargs
+    ) -> TemplateResponse: ...
+
+
+class BaseUpdateView:
+    def get(
+        self,
+        request: WSGIRequest,
+        *args,
+        **kwargs
+    ) -> TemplateResponse: ...
+
+
+class DeletionMixin:
+    def delete(
+        self,
+        request: WSGIRequest,
+        *args,
+        **kwargs
+    ) -> HttpResponseRedirect: ...
+    def get_success_url(self) -> str: ...
+    def post(
+        self,
+        request: WSGIRequest,
+        *args,
+        **kwargs
+    ) -> HttpResponseRedirect: ...
+
+
+class FormMixin:
+    def form_invalid(self, form: Form) -> TemplateResponse: ...
+    def form_valid(self, form: Form) -> HttpResponseRedirect: ...
+    def get_context_data(self, **kwargs) -> Dict[str, Any]: ...
+    def get_form(self, form_class: None = ...) -> BaseForm: ...
+    def get_form_class(self) -> Any: ...
+    def get_form_kwargs(self) -> Dict[str, Union[None, MultiValueDict]]: ...
+    def get_initial(self) -> Dict[Any, Any]: ...
+    def get_prefix(self) -> None: ...
+    def get_success_url(self) -> str: ...
+
+
+class ModelFormMixin:
+    def get_form_class(self) -> Type[ModelForm]: ...
+    def get_form_kwargs(
+        self
+    ) -> Dict[str, Union[None, MultiValueDict, Model]]: ...
+    def get_success_url(self) -> str: ...
+
+
+class ProcessFormView:
+    def get(
+        self,
+        request: WSGIRequest,
+        *args,
+        **kwargs
+    ) -> TemplateResponse: ...
+    def post(
+        self,
+        request: WSGIRequest,
+        *args,
+        **kwargs
+    ) -> Union[TemplateResponse, HttpResponseRedirect]: ...