From fb21d1ab49aa397531caa791bb6638b597cc26d5 Mon Sep 17 00:00:00 2001
From: Feei <feei@feei.cn>
Date: Mon, 14 Aug 2017 17:01:03 +0800
Subject: [PATCH] fix Python3.x test.case

---
 cobra/utils.py | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/cobra/utils.py b/cobra/utils.py
index 02c68b5b..5e1d18c8 100644
--- a/cobra/utils.py
+++ b/cobra/utils.py
@@ -271,8 +271,9 @@ def path_to_file(path):
     :return:
     """
     paths = path.split('/')
-    paths = filter(None, paths)
-    return '.../{0}'.format(paths[len(paths) - 1])
+    paths = list(filter(None, paths))
+    length = len(paths)
+    return '.../{0}'.format(paths[length - 1])
 
 
 def percent(part, whole, need_per=True):