From 2d732715ff50241fcddfab58795306a3880bd3c3 Mon Sep 17 00:00:00 2001
From: mvdbeek <m.vandenbeek@gmail.com>
Date: Wed, 22 Aug 2018 14:35:34 +0200
Subject: [PATCH] Fix grouping tool

---
 tools/stats/grouping.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/stats/grouping.py b/tools/stats/grouping.py
index c2ecde15e43..a003219217e 100644
--- a/tools/stats/grouping.py
+++ b/tools/stats/grouping.py
@@ -72,7 +72,7 @@ def main():
     except Exception:
         stop_err("Group column not specified.")
 
-    tmpfile = tempfile.NamedTemporaryFile()
+    tmpfile = tempfile.NamedTemporaryFile(mode='r')
 
     try:
         """