Fix "invalid escape sequences" error on Python 3.6

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

diff --git a/youtube_dl/extractor/viewster.py b/youtube_dl/extractor/viewster.py
index 1813b81d6e36ae97a04e05a6a87b21739bdaabff..52dd95e2fe19041f01e49b1a4a3f9566c1f0e60b 100644 (file)
--- a/youtube_dl/extractor/viewster.py
+++ b/youtube_dl/extractor/viewster.py
@@ -6,7 +6,6 @@ import re
 from .common import InfoExtractor
 from ..compat import (
     compat_HTTPError,
-    compat_urllib_parse,
     compat_urllib_parse_unquote,
 )
 from ..utils import (
@@ -158,7 +157,7 @@ class ViewsterIE(InfoExtractor):
                         formats.extend(m3u8_formats)
                 else:
                     qualities_basename = self._search_regex(
-                        '/([^/]+)\.csmil/',
+                        r'/([^/]+)\.csmil/',
                         manifest_url, 'qualities basename', default=None)
                     if not qualities_basename:
                         continue