From da0847048aa7f934573fa449cea8643def056aa5 Mon Sep 17 00:00:00 2001
From: Serhiy Storchaka <storchaka@gmail.com>
Date: Wed, 27 Mar 2019 08:02:28 +0200
Subject: bpo-36431: Use PEP 448 dict unpacking for merging two dicts.
 (GH-12553)

---
 Lib/urllib/request.py | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

(limited to 'Lib/urllib/request.py')

diff --git a/Lib/urllib/request.py b/Lib/urllib/request.py
index 9a3d399f01..df2ff06f0f 100644
--- a/Lib/urllib/request.py
+++ b/Lib/urllib/request.py
@@ -426,8 +426,7 @@ class Request:
         self.unredirected_hdrs.pop(header_name, None)
 
     def header_items(self):
-        hdrs = self.unredirected_hdrs.copy()
-        hdrs.update(self.headers)
+        hdrs = {**self.unredirected_hdrs, **self.headers}
         return list(hdrs.items())
 
 class OpenerDirector:
-- 
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