From 3ff562030cb223f8c2acf5ba73ce657efa1c5b21 Mon Sep 17 00:00:00 2001
From: Jeremy Langley <gettingBack2Basics@gmail.com>
Date: Mon, 28 Feb 2022 20:51:14 -0800
Subject: [PATCH] Update rest_framework/urlpatterns.py

Co-authored-by: Tom Christie <tom@tomchristie.com>
---
 rest_framework/urlpatterns.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/rest_framework/urlpatterns.py b/rest_framework/urlpatterns.py
index 62df08c8b..9f48d44a2 100644
--- a/rest_framework/urlpatterns.py
+++ b/rest_framework/urlpatterns.py
@@ -9,7 +9,8 @@ def _get_format_path_converter(suffix_kwarg, allowed):
         if len(allowed) == 1:
             allowed_pattern = allowed[0]
         else:
-            allowed_pattern = f'(?:{"|".join(allowed)})'
+            allowed_cases = "|".join(allowed)
+            allowed_pattern = f'(?:{allowed_cases})'
         suffix_pattern = r"\.%s/?" % allowed_pattern
     else:
         suffix_pattern = r"\.[a-z0-9]+/?"