[youtube] Don't pollute default query dict (closes #17593)

2018-09-17 22:13:39 +07:00
parent 1084563eaa
commit c11485162b
1 changed files with 3 additions and 1 deletions
--- a/youtube_dl/extractor/youtube.py
+++ b/youtube_dl/extractor/youtube.py
@@ -259,7 +259,9 @@ class YoutubeBaseInfoExtractor(InfoExtractor):
        return True

    def _download_webpage_handle(self, *args, **kwargs):
-        kwargs.setdefault('query', {})['disable_polymer'] = 'true'
+        query = kwargs.get('query', {}).copy()
+        query['disable_polymer'] = 'true'
+        kwargs['query'] = query
        return super(YoutubeBaseInfoExtractor, self)._download_webpage_handle(
            *args, **compat_kwargs(kwargs))