Traceback (most recent call last):


 "<stdin>", line 1, in <module>


 "/Users/c97346/i/pandas/e/lib/python3.7/site-packages/dask_ml/model_selection/_split.py", line 435, in train_test_split

for arr in arrays


 "/Users/c97346/i/pandas/e/lib/python3.7/site-packages/dask_ml/model_selection/_split.py", line 435, in <genexpr>

for arr in arrays


 "/Users/c97346/i/pandas/e/lib/python3.7/site-packages/dask/dataframe/core.py", line 839, in random_split

if not np.allclose(sum(frac), 1):
TypeError: unsupported operand type(s) for +: 'int' and 'NoneType'

Traceback (most recent call last):


 "/usr/local/bin/youtube-dl/youtube_dl/YoutubeDL.py", line 797, in extract_info

ie_result = ie.extract(url)


 "/usr/local/bin/youtube-dl/youtube_dl/extractor/common.py", line 530, in extract

ie_result = self._real_extract(url)


 "/usr/local/bin/youtube-dl/youtube_dl/extractor/udemy.py", line 442, in _real_extract

course_id, title = self._extract_course_info(webpage, course_path)


 "/usr/local/bin/youtube-dl/youtube_dl/extractor/udemy.py", line 82, in _extract_course_info

], webpage, 'course id')


 "/usr/local/bin/youtube-dl/youtube_dl/extractor/common.py", line 1005, in _search_regex

raise RegexNotFoundError('Unable to extract %s' % _name)
RegexNotFoundError: Unable to extract course id; please report this issue on https://yt-dl.org/bug . Make sure you are using the latest version; type
youtube-dl -U
to update. Be sure to call youtube-dl with the --verbose flag and include its complete output.
