From 513bf4c48c8f04014c9f32c330378ddc93fcbb1c Mon Sep 17 00:00:00 2001
From: IWASE Yusuke <iwase.yusuke0@gmail.com>
Date: Thu, 20 Oct 2016 16:48:10 +0900
Subject: [PATCH] ovs/vsctl: Avoid applying next() to non-iterator object

In Python 2, the builtin function next() can not be applied to
non-iterator object.
This patch fixes to use the list comprehensions and avoid applying
next() to a list type object.

Signed-off-by: IWASE Yusuke <iwase.yusuke0@gmail.com>
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
---
 ryu/lib/ovs/vsctl.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/ryu/lib/ovs/vsctl.py b/ryu/lib/ovs/vsctl.py
index f1454985..66c2d628 100644
--- a/ryu/lib/ovs/vsctl.py
+++ b/ryu/lib/ovs/vsctl.py
@@ -126,8 +126,8 @@ def datum_from_string(type_, value_string, symtab=None):
 
 def ifind(pred, seq):
     try:
-        return next(filter(pred, seq))
-    except StopIteration:
+        return [i for i in seq if pred(i)][0]
+    except IndexError:
         return None