From e69fbb6a560a02d0587b9075afd338a1e9073af0 Mon Sep 17 00:00:00 2001
From: Serhiy Storchaka <storchaka@gmail.com>
Date: Mon, 4 Dec 2017 11:51:55 +0200
Subject: Fix a regression in uuid added in bpo-32107. (#4677)

uuid.get_node() always must return a stable result.
Also added a test for non-reproducibility of _random_getnode().
Original patch by Xavier de Gaye.
---
 Lib/uuid.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

(limited to 'Lib/uuid.py')

diff --git a/Lib/uuid.py b/Lib/uuid.py
index cb2bc092bd..be06a6eff3 100644
--- a/Lib/uuid.py
+++ b/Lib/uuid.py
@@ -674,14 +674,14 @@ def getnode():
         getters = [_unix_getnode, _ifconfig_getnode, _ip_getnode,
                    _arp_getnode, _lanscan_getnode, _netstat_getnode]
 
-    for getter in getters:
+    for getter in getters + [_random_getnode]:
         try:
             _node = getter()
         except:
             continue
         if _node is not None:
             return _node
-    return _random_getnode()
+    assert False, '_random_getnode() returned None'
 
 
 _last_timestamp = None
-- 
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