From b720e851fa10597bd4327e56cdb96380a789ef5e Mon Sep 17 00:00:00 2001
From: Christophe Benz <christophe.benz@gmail.com>
Date: Mon, 9 Aug 2010 20:05:48 +0200
Subject: [PATCH] bugfix when backends=''

---
 weboob/core/ouiboube.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/weboob/core/ouiboube.py b/weboob/core/ouiboube.py
index 83051eeb..2282600b 100644
--- a/weboob/core/ouiboube.py
+++ b/weboob/core/ouiboube.py
@@ -146,8 +146,8 @@ class Weboob(object):
         @return  an iterator of results
         """
         backends = self.backend_instances.values()
-        if 'backends' in kwargs:
-            _backends = kwargs.pop('backends')
+        _backends = kwargs.pop('backends', None)
+        if _backends:
             if isinstance(_backends, BaseBackend):
                 backends = [_backends]
             elif isinstance(_backends, (str,unicode)) and _backends: