Fix "invalid escape sequences" error on Python 3.6

[youtube-dl] / youtube_dl / extractor / zingmp3.py

diff --git a/youtube_dl/extractor/zingmp3.py b/youtube_dl/extractor/zingmp3.py
index 0f0e9d0eb9b1ac945934b11a134d143d82b19fb0..adfdcaabf6cb32ba9671db628007eeecbeb31b49 100644 (file)
--- a/youtube_dl/extractor/zingmp3.py
+++ b/youtube_dl/extractor/zingmp3.py
@@ -95,7 +95,7 @@ class ZingMp3IE(ZingMp3BaseInfoExtractor):
             'id': 'ZWZB9WAB',
             'title': 'Xa Mãi Xa',
             'ext': 'mp3',
-            'thumbnail': 're:^https?://.*\.jpg$',
+            'thumbnail': r're:^https?://.*\.jpg$',
         },
     }, {
         'url': 'http://mp3.zing.vn/video-clip/Let-It-Go-Frozen-OST-Sungha-Jung/ZW6BAEA0.html',