Refs #34482 -- Reverted "Fixed #32969 -- Fixed pickling HttpResponse and subclasses."

This reverts commit d7f5bfd241.

Thanks Márton Salomváry for the report.

django/http/response.py

@@ -369,31 +369,12 @@ class HttpResponse(HttpResponseBase):
     """
 
     streaming = False
-    non_picklable_attrs = frozenset(
-        [
-            "resolver_match",
-            # Non-picklable attributes added by test clients.
-            "asgi_request",
-            "client",
-            "context",
-            "json",
-            "templates",
-            "wsgi_request",
-        ]
-    )
 
     def __init__(self, content=b"", *args, **kwargs):
         super().__init__(*args, **kwargs)
         # Content is a bytestring. See the `content` property methods.
         self.content = content
 
-    def __getstate__(self):
-        obj_dict = self.__dict__.copy()
-        for attr in self.non_picklable_attrs:
-            if attr in obj_dict:
-                del obj_dict[attr]
-        return obj_dict
-
     def __repr__(self):
         return "<%(cls)s status_code=%(status_code)d%(content_type)s>" % {
             "cls": self.__class__.__name__,

django/template/response.py

@@ -8,9 +8,7 @@ class ContentNotRenderedError(Exception):
 
 
 class SimpleTemplateResponse(HttpResponse):
-    non_picklable_attrs = HttpResponse.non_picklable_attrs | frozenset(
-        ["template_name", "context_data", "_post_render_callbacks"]
-    )
+    rendering_attrs = ["template_name", "context_data", "_post_render_callbacks"]
 
     def __init__(
         self,
@@ -57,11 +55,16 @@ class SimpleTemplateResponse(HttpResponse):
         Raise an exception if trying to pickle an unrendered response. Pickle
         only rendered data, not the data used to construct the response.
         """
+        obj_dict = self.__dict__.copy()
         if not self._is_rendered:
             raise ContentNotRenderedError(
                 "The response content must be rendered before it can be pickled."
             )
-        return super().__getstate__()
+        for attr in self.rendering_attrs:
+            if attr in obj_dict:
+                del obj_dict[attr]
+
+        return obj_dict
 
     def resolve_template(self, template):
         """Accept a template object, path-to-template, or list of paths."""
@@ -142,9 +145,7 @@ class SimpleTemplateResponse(HttpResponse):
 
 
 class TemplateResponse(SimpleTemplateResponse):
-    non_picklable_attrs = SimpleTemplateResponse.non_picklable_attrs | frozenset(
-        ["_request"]
-    )
+    rendering_attrs = SimpleTemplateResponse.rendering_attrs + ["_request"]
 
     def __init__(
         self,