From be7ed839418239ccdafdd0b6537b995c360d748e Mon Sep 17 00:00:00 2001
From: David Pedersen <limero@me.com>
Date: Thu, 11 Jul 2019 13:23:24 +0200
Subject: [PATCH] Calculate regex default only once

---
 youtube_dl/extractor/tvplay.py | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/youtube_dl/extractor/tvplay.py b/youtube_dl/extractor/tvplay.py
index 68828aa86..d3f83c490 100644
--- a/youtube_dl/extractor/tvplay.py
+++ b/youtube_dl/extractor/tvplay.py
@@ -313,11 +313,10 @@ class TVPlayIE(InfoExtractor):
         # TODO: webvtt in m3u8
         subtitles = {}
         sub_paths = [video.get(key) for key in ['sami_path', 'subtitles_webvtt', 'subtitles_for_hearing_impaired']]
+        default = compat_urlparse.urlparse(url).netloc.rsplit('.', 1)[-1]
         for path in sub_paths:
             if path:
-                lang = self._search_regex(
-                    r'_(.*)(\.)', path, 'lang',
-                    default=compat_urlparse.urlparse(url).netloc.rsplit('.', 1)[-1])
+                lang = self._search_regex(r'_(.*)(\.)', path, 'lang', default)
                 subtitles[lang] = [{
                     'url': path,
                 }]