Fix "invalid escape sequences" error on Python 3.6

[youtube-dl] / README.md

diff --git a/README.md b/README.md
index 46aa78f66ceb8150bbb01afad3f6c8af2e053845..ead6e3dbf3867b9c65c8ef3656c88713316da1a9 100644 (file)
--- a/README.md
+++ b/README.md
@@ -961,7 +961,7 @@ After you have ensured this site is distributing its content legally, you can fo
                 'id': '42',
                 'ext': 'mp4',
                 'title': 'Video title goes here',
-                'thumbnail': 're:^https?://.*\.jpg$',
+                'thumbnail': r're:^https?://.*\.jpg$',
                 # TODO more properties, either as:
                 # * A value
                 # * MD5 checksum; start the string with md5: