From 91b9734d4ce2653775e94d70a71163552f5fa3c8 Mon Sep 17 00:00:00 2001
From: Laurent Monin <github@norz.org>
Date: Mon, 9 Dec 2019 12:24:56 +0100
Subject: [PATCH] Make PRESERVED_TAGS a tuple rather than a list

---
 picard/util/tags.py | 15 +++++++++++----
 1 file changed, 11 insertions(+), 4 deletions(-)

diff --git a/picard/util/tags.py b/picard/util/tags.py
index 718f78add..511ff495b 100644
--- a/picard/util/tags.py
+++ b/picard/util/tags.py
@@ -107,10 +107,17 @@ TAG_NAMES = {
     'r128_track_gain': N_('R128 Track Gain'),
 }
 
-PRESERVED_TAGS = [
-    "~bitrate", "~bits_per_sample", "~format", "~channels", "~sample_rate",
-    "~dirname", "~filename", "~extension", "~video",
-]
+PRESERVED_TAGS = (
+    '~bitrate',
+    '~bits_per_sample',
+    '~channels',
+    '~dirname',
+    '~extension',
+    '~filename',
+    '~format',
+    '~sample_rate',
+    '~video',
+)
 
 
 def display_tag_name(name):