From 461b06a51765386b2f25ddbcd8e78af65db50d49 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Fran=C3=A7ois=20Boulogne?= <fboulogne sciunto org>
Date: Wed, 3 Feb 2016 21:42:51 -0500
Subject: [PATCH] MAINT: fixes #1652

add close()

Stephans solution

close file before

remove comment
---
 skimage/io/util.py | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/skimage/io/util.py b/skimage/io/util.py
index 74158cac..8cda882e 100644
--- a/skimage/io/util.py
+++ b/skimage/io/util.py
@@ -24,10 +24,11 @@ def file_or_url_context(resource_name):
     """Yield name of file from the given resource (i.e. file or url)."""
     if is_url(resource_name):
         _, ext = os.path.splitext(resource_name)
-        with tempfile.NamedTemporaryFile(delete=False, suffix=ext) as f:
-            u = urlopen(resource_name)
-            f.write(u.read())
         try:
+            with tempfile.NamedTemporaryFile(delete=False, suffix=ext) as f:
+                u = urlopen(resource_name)
+                f.write(u.read())
+            # f must be closed before yielding
             yield f.name
         finally:
             os.remove(f.name)