Fix "invalid escape sequences" error on Python 3.6

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

diff --git a/youtube_dl/extractor/libsyn.py b/youtube_dl/extractor/libsyn.py
index d375695f5a26dbc072455777487ed239820c1ec6..4750b03a3fb2f47818858338b7eb9a8b4889c012 100644 (file)
--- a/youtube_dl/extractor/libsyn.py
+++ b/youtube_dl/extractor/libsyn.py
@@ -41,7 +41,7 @@ class LibsynIE(InfoExtractor):
 
         formats = [{
             'url': media_url,
-        } for media_url in set(re.findall('var\s+mediaURL(?:Libsyn)?\s*=\s*"([^"]+)"', webpage))]
+        } for media_url in set(re.findall(r'var\s+mediaURL(?:Libsyn)?\s*=\s*"([^"]+)"', webpage))]
 
         podcast_title = self._search_regex(
             r'<h2>([^<]+)</h2>', webpage, 'podcast title', default=None)