YoutubeYtBe extraction not working using Python 2, <3.6

[windom]

Checklist

• I'm reporting a broken site support
• I've verified that I'm running youtube-dl version 2020.12.29
• I've checked that all provided URLs are alive and playable in a browser
• I've checked that all URLs and arguments with special characters are properly quoted or escaped
• I've searched the bugtracker for similar issues including closed ones

Verbose log

[debug] System config: []
[debug] User config: []
[debug] Custom config: []
[debug] Command-line args: [u'-v', u'https://youtu.be/yeWKywCrFtk?list=PL2qgrgXsNUG5ig9cat4ohreBjYLAPC0J5']
[debug] Encodings: locale UTF-8, fs utf-8, out UTF-8, pref UTF-8
[debug] youtube-dl version 2020.12.29
[debug] Git HEAD: 479cc6d5a
[debug] Python version 2.7.16 (CPython) - Darwin-20.2.0-x86_64-i386-64bit
[debug] exe versions: none
[debug] Proxy map: {}
ERROR: no suitable InfoExtractor for URL https://www.youtube.com/watch?list=PL2qgrgXsNUG5ig9cat4ohreBjYLAPC0J5&feature=youtu.be&v=yeWKywCrFtk
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/runpy.py", line 174, in _run_module_as_main
    "__main__", fname, loader, pkg_name)
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/runpy.py", line 72, in _run_code
    exec code in run_globals
  File "/Users/windom/tenta/youtube-dl/youtube_dl/__main__.py", line 19, in <module>
    youtube_dl.main()
  File "youtube_dl/__init__.py", line 474, in main
    _real_main(argv)
  File "youtube_dl/__init__.py", line 464, in _real_main
    retcode = ydl.download(all_urls)
  File "youtube_dl/YoutubeDL.py", line 2029, in download
    url, force_generic_extractor=self.params.get('force_generic_extractor', False))
  File "youtube_dl/YoutubeDL.py", line 796, in extract_info
    return self.__extract_info(url, ie, download, extra_info, process)
  File "youtube_dl/YoutubeDL.py", line 803, in wrapper
    return func(self, *args, **kwargs)
  File "youtube_dl/YoutubeDL.py", line 835, in __extract_info
    return self.process_ie_result(ie_result, download, extra_info)
  File "youtube_dl/YoutubeDL.py", line 876, in process_ie_result
    extra_info=extra_info)
  File "youtube_dl/YoutubeDL.py", line 798, in extract_info
    self.report_error('no suitable InfoExtractor for URL %s' % url)
  File "youtube_dl/YoutubeDL.py", line 625, in report_error
    self.trouble(error_message, tb)
  File "youtube_dl/YoutubeDL.py", line 587, in trouble
    tb_data = traceback.format_list(traceback.extract_stack())

Description

The test URL for YoutubeYtBeIE results in the exception above when using Python2, but works in Python 3.

I think the root cause is in YoutubeYtBeIE._real_extract, where the update_url_query call will make an URL in which v, list and feature will be in nondeterministic order using Python2. Some orderings result in URLs which won't be matched by any of the Youtube extractors.

Since Python 3.6+ has insertion iteration order this is not a problem there.