From 1504187949350295af8497859d8210130c851e1d Mon Sep 17 00:00:00 2001
From: Thomas Grainger <tagrain@gmail.com>
Date: Thu, 17 Oct 2024 19:09:13 +0100
Subject: [PATCH] Update src/trio/_core/_asyncgens.py

---
 src/trio/_core/_asyncgens.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/trio/_core/_asyncgens.py b/src/trio/_core/_asyncgens.py
index 76963a352..6bb6ceeed 100644
--- a/src/trio/_core/_asyncgens.py
+++ b/src/trio/_core/_asyncgens.py
@@ -83,9 +83,10 @@ def finalizer(agen: AsyncGeneratorType[object, NoReturn]) -> None:
             agen_name = name_asyncgen(agen)
             try:
                 self.foreign.remove(id(agen))
-                is_ours = False
             except KeyError:
                 is_ours = True
+            else:
+                is_ours = False
 
             if is_ours:
                 runner.entry_queue.run_sync_soon(