Traceback (most recent call last):

 "/usr/lib64/python3.4/site-packages/nose/result.py", line 187, in _exc_info_to_string
return _TextTestResult._exc_info_to_string(self, err, test)

 "/usr/lib64/python3.4/unittest/result.py", line 184, in _exc_info_to_string
msgLines = traceback.format_exception(exctype, value, tb)

 "/usr/lib64/python3.4/traceback.py", line 181, in format_exception
return list(_format_exception_iter(etype, value, tb, limit, chain))

 "/usr/lib64/python3.4/traceback.py", line 153, in _format_exception_iter
yield from _format_list_iter(_extract_tb_iter(tb, limit=limit))

 "/usr/lib64/python3.4/traceback.py", line 18, in _format_list_iter
for filename, lineno, name, line in extracted_list:

 "/usr/lib64/python3.4/traceback.py", line 65, in _extract_tb_or_stack_iter
line = linecache.getline(filename, lineno, f.f_globals)

 "/usr/lib64/python3.4/linecache.py", line 15, in getline
lines = getlines(filename, module_globals)

 "/usr/lib64/python3.4/linecache.py", line 41, in getlines
return updatecache(filename, module_globals)

 "/usr/lib64/python3.4/linecache.py", line 126, in updatecache
with tokenize.open(fullname) as fp:

 "/usr/lib64/python3.4/tokenize.py", line 438, in open
buffer = _builtin_open(filename, 'rb')TypeError: open() takes 1 positional argument but 2 were given
Traceback (most recent call last):


 "/usr/lib/python3/dist-packages/youtube_dl/YoutubeDL.py", line 797, in extract_info

ie_result = ie.extract(url)


 "/usr/lib/python3/dist-packages/youtube_dl/extractor/common.py", line 530, in extract

ie_result = self._real_extract(url)


 "/usr/lib/python3/dist-packages/youtube_dl/extractor/youtube.py", line 2364, in _real_extract

self._sort_formats(formats)


 "/usr/lib/python3/dist-packages/youtube_dl/extractor/common.py", line 1327, in _sort_formats

raise ExtractorError('No video formats found')
youtube_dl.utils.ExtractorError: No video formats found; please report this issue on https://yt-dl.org/bug . Make sure you are using the latest version; see
https://yt-dl.org/update
on how to update. Be sure to call youtube-dl with the --verbose flag and include its complete output.
