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From: Mariusz Felisiak <felisiak.mariusz@gmail.com>
Date: Sun, 17 Nov 2024 16:07:23 +0100
Subject: Refs #35844 -- Fixed copying BaseContext and its subclasses on
Python 3.14+.
super objects are copyable on Python 3.14+:
https://github.com/python/cpython/commit/5ca4e34bc1aab8321911aac6d5b2b9e75ff764d8
and can no longer be used in BaseContext.__copy__().
Origin: backport, https://github.com/django/django/pull/18824
Bug-Debian: https://bugs.debian.org/1122185
Last-Update: 2025-12-17
---
django/template/context.py | 4 +++-
tests/template_tests/test_context.py | 8 ++++++++
2 files changed, 11 insertions(+), 1 deletion(-)
diff --git a/django/template/context.py b/django/template/context.py
index ccf0b43..5c38e40 100644
--- a/django/template/context.py
+++ b/django/template/context.py
@@ -35,7 +35,9 @@ class BaseContext:
self.dicts.append(value)
def __copy__(self):
- duplicate = copy(super())
+ duplicate = BaseContext()
+ duplicate.__class__ = self.__class__
+ duplicate.__dict__ = copy(self.__dict__)
duplicate.dicts = self.dicts[:]
return duplicate
diff --git a/tests/template_tests/test_context.py b/tests/template_tests/test_context.py
index 4feb9e5..36de455 100644
--- a/tests/template_tests/test_context.py
+++ b/tests/template_tests/test_context.py
@@ -1,3 +1,4 @@
+from copy import copy
from unittest import mock
from django.http import HttpRequest
@@ -276,3 +277,10 @@ class RequestContextTests(SimpleTestCase):
context = RequestContext(request, {})
context["foo"] = "foo"
self.assertEqual(template.render(context), "foo")
+
+ def test_context_copyable(self):
+ request_context = RequestContext(HttpRequest())
+ request_context_copy = copy(request_context)
+ self.assertIsInstance(request_context_copy, RequestContext)
+ self.assertEqual(request_context_copy.dicts, request_context.dicts)
+ self.assertIsNot(request_context_copy.dicts, request_context.dicts)
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