From f18ebefdd34f86a0c027ecb5323ec3805c8d0874 Mon Sep 17 00:00:00 2001
From: krassowski <5832902+krassowski@users.noreply.github.com>
Date: Thu, 10 Aug 2023 22:45:21 +0100
Subject: [PATCH 1/2] Fix clearing output references

---
 IPython/core/displayhook.py | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/IPython/core/displayhook.py b/IPython/core/displayhook.py
index aba4f904d8d..5b4ca6a10f7 100644
--- a/IPython/core/displayhook.py
+++ b/IPython/core/displayhook.py
@@ -296,9 +296,12 @@ def flush(self):
 
         for n in range(1,self.prompt_count + 1):
             key = '_'+repr(n)
+            try:
+                del self.shell.user_ns_hidden[key]
+            except KeyError: pass
             try:
                 del self.shell.user_ns[key]
-            except: pass
+            except KeyError: pass
         # In some embedded circumstances, the user_ns doesn't have the
         # '_oh' key set up.
         oh = self.shell.user_ns.get('_oh', None)

From 3c113ad2ce1058d2331c89a0cf7365e7ca9ee6e2 Mon Sep 17 00:00:00 2001
From: krassowski <5832902+krassowski@users.noreply.github.com>
Date: Thu, 10 Aug 2023 22:56:00 +0100
Subject: [PATCH 2/2] Darker

---
 IPython/core/displayhook.py | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/IPython/core/displayhook.py b/IPython/core/displayhook.py
index 5b4ca6a10f7..b411f116139 100644
--- a/IPython/core/displayhook.py
+++ b/IPython/core/displayhook.py
@@ -298,10 +298,12 @@ def flush(self):
             key = '_'+repr(n)
             try:
                 del self.shell.user_ns_hidden[key]
-            except KeyError: pass
+            except KeyError:
+                pass
             try:
                 del self.shell.user_ns[key]
-            except KeyError: pass
+            except KeyError:
+                pass
         # In some embedded circumstances, the user_ns doesn't have the
         # '_oh' key set up.
         oh = self.shell.user_ns.get('_oh', None)