From ee3c4c1038ed67203ba9c26f591c764f1f550910 Mon Sep 17 00:00:00 2001
From: Oliverpool <oliverpool@hotmail.fr>
Date: Tue, 19 Jul 2016 17:35:29 +0200
Subject: [PATCH] sorted already retrieves the keys

---
 patacrep/index.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/patacrep/index.py b/patacrep/index.py
index 75d55107..212511c3 100644
--- a/patacrep/index.py
+++ b/patacrep/index.py
@@ -194,6 +194,6 @@ class Index:
     def entries_to_str(self):
         """Return the LaTeX code corresponding to the index."""
         string = ""
-        for letter in sorted(self.data.keys()):
+        for letter in sorted(self.data):
             string += self.idxblock_to_str(letter, self.data[letter]) + EOL
         return string