Pytube: KeyError: 'url_encoded_fmt_stream_map'

[rosin55]

import pytube

link = 'https://youtu.be/WvISLQMd8BM'

save_path = 'c:Temp'
pytube.YouTube(link).streams.first().download(save_path)

Windows 10 and Python 3.7

Traceback (most recent call last):
File "C:/MyWork/PythonEdu/_DownloadTube/Issue.py", line 7, in
pytube.YouTube(link).streams.first().download(save_path)
File "C:UsersIngeneerAppDataLocalProgramsPythonPython37libsite-packagespytube__main__.py", line 88, in __init__
self.prefetch_init()
File "C:UsersIngeneerAppDataLocalProgramsPythonPython37libsite-packagespytube__main__.py", line 97, in prefetch_init
self.init()
File "C:UsersIngeneerAppDataLocalProgramsPythonPython37libsite-packagespytube__main__.py", line 143, in init
mixins.apply_descrambler(self.player_config_args, fmt)
File "C:UsersIngeneerAppDataLocalProgramsPythonPython37libsite-packagespytubemixins.py", line 96, in apply_descrambler
for i in stream_data[key].split(',')
KeyError: 'url_encoded_fmt_stream_map'

[swiftyy-mage]

Fixed, #537

[adeptex]

I am getting the same error on Ubuntu 18 Python 3.7

Python 3.7.5 (default, Nov  7 2019, 10:50:52) 
[GCC 8.3.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> from pytube import YouTube
>>> yt = YouTube('http://youtube.com/watch?v=B0CuLzsivzA')
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/opt/pytube/pytube/__main__.py", line 88, in __init__
    self.prefetch_init()
  File "/opt/pytube/pytube/__main__.py", line 97, in prefetch_init
    self.init()
  File "/opt/pytube/pytube/__main__.py", line 143, in init
    mixins.apply_descrambler(self.player_config_args, fmt)
  File "/opt/pytube/pytube/mixins.py", line 96, in apply_descrambler
    for i in stream_data[key].split(',')
KeyError: 'url_encoded_fmt_stream_map'

[tazV2]

This solved it, for me.
https://github.com/nficano/pytube/issues/467#issuecomment-567560796

[hbmartin]

@rosin55 fixed in my Python 3 only fork: https://github.com/hbmartin/pytube3

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