From c87801f0a911bd02f4b4ae910751c8b04717fd02 Mon Sep 17 00:00:00 2001
From: Jonathan Prates <jonathan.prates@corp.terra.com.br>
Date: Wed, 28 May 2014 17:26:28 -0300
Subject: [PATCH] Using first() from cloned queryset

---
 mongoengine/queryset/base.py | 6 +-----
 1 file changed, 1 insertion(+), 5 deletions(-)

diff --git a/mongoengine/queryset/base.py b/mongoengine/queryset/base.py
index fe1285c6..85d2dc3f 100644
--- a/mongoengine/queryset/base.py
+++ b/mongoengine/queryset/base.py
@@ -159,11 +159,7 @@ class BaseQuerySet(object):
 
         queryset = self.clone()
         queryset._ordering = []
-        try:
-            queryset[0]
-            return True
-        except IndexError:
-            return False
+        return False if queryset.first() is None else True
 
     def __nonzero__(self):
         """ Same behaviour in Py2 """