Refs #35704 -- Used copy.replace() in Operation.reduce() methods.

1 files changed, 17 insertions, 0 deletions

diff --git a/django/utils/copy.py b/django/utils/copy.py
new file mode 100644
index 0000000000..dd0cd729b0
--- /dev/null
+++ b/django/utils/copy.py
@@ -0,0 +1,17 @@
+from django.utils.version import PY313
+
+if PY313:
+    from copy import replace
+else:
+    # Backport of copy.replace() from Python 3.13.
+    def replace(obj, /, **changes):
+        """Return a new object replacing specified fields with new values.
+
+        This is especially useful for immutable objects, like named tuples or
+        frozen dataclasses.
+        """
+        cls = obj.__class__
+        func = getattr(cls, "__replace__", None)
+        if func is None:
+            raise TypeError(f"replace() does not support {cls.__name__} objects")
+        return func(obj, **changes)