From 44b548dda872c0d4f30afd6b44fd74b053a55ad8 Mon Sep 17 00:00:00 2001
From: R David Murray <rdmurray@bitdance.com>
Date: Thu, 8 Sep 2016 13:59:53 -0400
Subject: #27364: fix "incorrect" uses of escape character in the stdlib.

And most of the tools.

Patch by Emanual Barry, reviewed by me, Serhiy Storchaka, and
Martin Panter.
---
 Lib/xml/etree/ElementTree.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'Lib/xml/etree/ElementTree.py')

diff --git a/Lib/xml/etree/ElementTree.py b/Lib/xml/etree/ElementTree.py
index 67b7f2ba70..4b0c661e31 100644
--- a/Lib/xml/etree/ElementTree.py
+++ b/Lib/xml/etree/ElementTree.py
@@ -1030,7 +1030,7 @@ def register_namespace(prefix, uri):
     ValueError is raised if prefix is reserved or is invalid.
 
     """
-    if re.match("ns\d+$", prefix):
+    if re.match(r"ns\d+$", prefix):
         raise ValueError("Prefix format reserved for internal use")
     for k, v in list(_namespace_map.items()):
         if k == uri or v == prefix:
-- 
cgit v1.2.1