From 17e4ce97a4f3d40ea5b6e48ac2efa114d6f91995 Mon Sep 17 00:00:00 2001
From: Daniel Hokka Zakrisson <daniel@hozac.com>
Date: Wed, 14 Nov 2012 13:35:21 +0100
Subject: [PATCH] Create a set of all the hosts in a group to prevent
 duplicates

Fixes #1516.
---
 lib/ansible/inventory/group.py | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/lib/ansible/inventory/group.py b/lib/ansible/inventory/group.py
index 599b53c0a09..80d72b17b50 100644
--- a/lib/ansible/inventory/group.py
+++ b/lib/ansible/inventory/group.py
@@ -50,11 +50,11 @@ class Group(object):
 
     def get_hosts(self):
 
-        hosts = []
+        hosts = set()
         for kid in self.child_groups:
-            hosts.extend(kid.get_hosts())
-        hosts.extend(self.hosts)
-        return hosts
+            hosts.update(kid.get_hosts())
+        hosts.update(self.hosts)
+        return list(hosts)
 
     def get_variables(self):