From 713241a3c1f9ed4e084c1562cf5a4c4a0770835c Mon Sep 17 00:00:00 2001
From: Oliverpool <oliverpool@hotmail.fr>
Date: Fri, 29 Jan 2016 09:34:41 +0100
Subject: [PATCH] Prevent ResourceWarning

---
 patacrep/songs/__init__.py | 11 ++++++-----
 1 file changed, 6 insertions(+), 5 deletions(-)

diff --git a/patacrep/songs/__init__.py b/patacrep/songs/__init__.py
index 3745ab9e..3a7a92d0 100644
--- a/patacrep/songs/__init__.py
+++ b/patacrep/songs/__init__.py
@@ -194,11 +194,12 @@ class Song:
             # https://bugs.python.org/issue1692335
             return
         cached = {attr: getattr(self, attr) for attr in self.cached_attributes}
-        pickle.dump(
-            cached,
-            open(self.cached_name, 'wb'),
-            protocol=-1
-            )
+        with open(self.cached_name, 'wb') as cache_file:
+            pickle.dump(
+                cached,
+                cache_file,
+                protocol=-1
+                )
 
     def __str__(self):
         return str(self.fullpath)