Fix "invalid escape sequences" error on Python 3.6

[youtube-dl] / youtube_dl / extractor / ketnet.py

diff --git a/youtube_dl/extractor/ketnet.py b/youtube_dl/extractor/ketnet.py
index eb0a160089b395736a1370171ca7460e32f4e7e2..fb9c2dbd47789ae6f0457a4b2724c53875d14753 100644 (file)
--- a/youtube_dl/extractor/ketnet.py
+++ b/youtube_dl/extractor/ketnet.py
@@ -13,7 +13,7 @@ class KetnetIE(InfoExtractor):
             'ext': 'mp4',
             'title': 'Gluur mee op de filmset en op Pennenzakkenrock',
             'description': 'Gluur mee met Ghost Rockers op de filmset',
-            'thumbnail': 're:^https?://.*\.jpg$',
+            'thumbnail': r're:^https?://.*\.jpg$',
         }
     }, {
         'url': 'https://www.ketnet.be/kijken/karrewiet/uitzending-8-september-2016',