[lrt] Fix missing provider key

[youtube-dl] / youtube_dl / update.py

diff --git a/youtube_dl/update.py b/youtube_dl/update.py
index 941db3c8f968fdcc3f134a596c9cba4b50273dd9..2d2703368d8c2974e665985a10d1b6dcace8b235 100644 (file)
--- a/youtube_dl/update.py
+++ b/youtube_dl/update.py
@@ -19,7 +19,6 @@ from .version import __version__
 def rsa_verify(message, signature, key):
     from struct import pack
     from hashlib import sha256
-    from sys import version_info
 
     assert isinstance(message, bytes)
     block_size = 0
@@ -80,7 +79,7 @@ def update_self(to_screen, verbose):
             to_screen(compat_str(traceback.format_exc()))
         to_screen('ERROR: can\'t obtain versions info. Please try again later.')
         return
-    if not 'signature' in versions_info:
+    if 'signature' not in versions_info:
         to_screen('ERROR: the versions file is not signed or corrupted. Aborting.')
         return
     signature = versions_info['signature']