feat: annotate HttpRequest as readable, HttpResponse as writable

django-stubs/http/request.pyi

@@ -10,7 +10,7 @@ from django.core.files import uploadedfile, uploadhandler
 from django.urls import ResolverMatch
 from django.utils.datastructures import CaseInsensitiveMapping, ImmutableList, MultiValueDict
 from django.utils.functional import cached_property
-from typing_extensions import Self, override
+from typing_extensions import Reader, Self, override
 
 RAISE_ERROR: object
 host_validation_re: Pattern[str]
@@ -42,7 +42,7 @@ class HttpHeaders(CaseInsensitiveMapping[str]):
     @classmethod
     def to_asgi_names(cls, headers: Mapping[str, Any]) -> dict[str, Any]: ...
 
-class HttpRequest:
+class HttpRequest(Reader[bytes]):
     GET: _ImmutableQueryDict
     POST: _ImmutableQueryDict
     COOKIES: dict[str, str]

django-stubs/http/response.pyi

@@ -7,7 +7,7 @@ from typing import Any, Literal, NoReturn, TypeVar, overload, type_check_only
 
 from django.utils.datastructures import CaseInsensitiveMapping, _PropertyDescriptor
 from django.utils.functional import _StrOrPromise, cached_property
-from typing_extensions import override
+from typing_extensions import Writer, override
 
 class BadHeaderError(ValueError): ...
 
@@ -21,7 +21,7 @@ class ResponseHeaders(CaseInsensitiveMapping[str]):
     def pop(self, key: str, default: _Z = ...) -> _Z | tuple[str, str]: ...
     def setdefault(self, key: str, value: str | bytes | int) -> None: ...
 
-class HttpResponseBase:
+class HttpResponseBase(Writer[str | bytes]):
     status_code: int
     streaming: bool
     cookies: SimpleCookie