From 18a15bbc9c7df19fe38f252bcd62d5a3811e3451 Mon Sep 17 00:00:00 2001
From: Hrushikesh Vaidya <hrushikeshrv@gmail.com>
Date: Wed, 12 Jan 2022 12:23:09 +0530
Subject: [PATCH] Fixed #33433 -- Avoided unnecessary resolve() calls in
 technical_404_response().

Thanks Keryn Knight for the initial patch.
---
 django/views/debug.py | 12 +++++++-----
 1 file changed, 7 insertions(+), 5 deletions(-)

diff --git a/django/views/debug.py b/django/views/debug.py
index cff199ddb4..29291c0bf6 100644
--- a/django/views/debug.py
+++ b/django/views/debug.py
@@ -537,11 +537,13 @@ def technical_404_response(request, exception):
         urlconf = urlconf.__name__
 
     caller = ''
-    try:
-        resolver_match = resolve(request.path)
-    except Http404:
-        pass
-    else:
+    resolver_match = request.resolver_match
+    if resolver_match is None:
+        try:
+            resolver_match = resolve(request.path)
+        except Http404:
+            pass
+    if resolver_match is not None:
         obj = resolver_match.func
 
         if hasattr(obj, 'view_class'):