问题
Five out of ten times Pytube will send me this error when attempting to run my small testing script.
Here's the script:
import pytube
import urllib.request
from pytube import YouTube
yt = YouTube('https://www.youtube.com/watch?v=3NCyD3XoJgM')
print('Youtube video title is: ' + yt.title + '! Downloading now!')
Here's what I get:
Traceback (most recent call last):
File "youtube.py", line 6, in <module>
yt = YouTube('https://www.youtube.com/watch?v=3NCyD3XoJgM')
File "C:\Users\test\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.8_qbz5n2kfra8p0\LocalCache\local-packages\Python38\site-packages\pytube\__main__.py", line 91, in __init__
self.prefetch()
File "C:\Users\test\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.8_qbz5n2kfra8p0\LocalCache\local-packages\Python38\site-packages\pytube\__main__.py", line 183, in prefetch
self.js_url = extract.js_url(self.watch_html)
File "C:\Users\test\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.8_qbz5n2kfra8p0\LocalCache\local-packages\Python38\site-packages\pytube\extract.py", line 143, in js_url
base_js = get_ytplayer_config(html)["assets"]["js"]
KeyError: 'assets'
I am very confused. I attempted to reinstall Python plus pytube but I can't seem to remedy this issue. It's increasingly perplexing that the script works half of the time, but not the other half.
回答1:
For now fixed 100% with this:
https://github.com/nficano/pytube/pull/767#issuecomment-716184994
With anyone else getting this error or issue, run this command in a terminal or cmd:
python -m pip install git+https://github.com/nficano/pytube
An update to pytubeX that hasn't been released with the pip installation yet. The GitHub link is the current dev explaining the situation.
回答2:
I'm in the same trouble, but I guarantee that the top answer doesn't solve anything, just hide the problem until it pops up again. I investigated this scope of "extract.py" file, and found an error. This scope searches for a "string" snippet in the source code of the Youtube page where the video is, through a dictionary search, such as:
#Example ---------------
Vars = {
'name':'luis'
'age':'27'
}
print(Vars['name'])
result: 'luis'
#Extract.py Code -------
def js_url(html: str) -> str:
"""Get the base JavaScript url.
Construct the base JavaScript url, which contains
the decipher
"transforms".
:param str html:
The html contents of the watch page.
"""
base_js = get_ytplayer_config(html)["assets"]["js"]
return "https://youtube.com" + base_js
The error:
base_js = get_ytplayer_config(html)["assets"]["js"]
KeyError: 'assets'
It is given because this snippet of the source code does not support a search as dicionario, so 'KeyError' key error, because 'assets' is not a valid key, and the source code is not a dictionary. So I did this script, which I believe replace this original, but in mine, particularly, appeared other errors.
def js_url(html: str) -> str:
"""Get the base JavaScript url.
Construct the base JavaScript url, which contains
the decipher
"transforms".
:param str html:
The html contents of the watch page.
"""
base_js = html[html.find('js') + 4:html.find('.js')
+ 4]
return "https://youtube.com" + base_js
The above script searches for what the function wants as a string, not as dictionary.
I hope I have contributed to a more complete future solution :)
回答3:
Add this function to extract.py
def get_ytplayer_js(html: str) -> Any:
"""Get the YouTube player base JavaScript path.
:param str html
The html contents of the watch page.
:rtype: str
:returns:
Path to YouTube's base.js file.
"""
js_url_patterns = [
r"\"jsUrl\":\"([^\"]*)\"",
]
for pattern in js_url_patterns:
regex = re.compile(pattern)
function_match = regex.search(html)
if function_match:
logger.debug("finished regex search, matched: %s", pattern)
yt_player_js = function_match.group(1)
return yt_player_js
raise RegexMatchError(
caller="get_ytplayer_js", pattern="js_url_patterns"
)
and change the function "js_url" in extract.py from:
def js_url(html: str) -> str:
"""Get the base JavaScript url.
Construct the base JavaScript url, which contains the decipher
"transforms".
:param str html:
The html contents of the watch page.
"""
base_js = get_ytplayer_config(html)["assets"]["js"]
return "https://youtube.com" + base_js
to:
def js_url(html: str) -> str:
"""Get the base JavaScript url.
Construct the base JavaScript url, which contains the decipher
"transforms".
:param str html:
The html contents of the watch page.
"""
base_js = get_ytplayer_js(html)
return "https://youtube.com" + base_js
回答4:
It seems Pytube module is updated.
It works fine for pytube package
i.e try pip install pytube
uninstall pytube variations
回答5:
I had the same problem and updating pytube
to the latest version available currently the problem disappeared.
pip install pytube==10.0.0
or
pip install --upgrade pytube
回答6:
If you are using the package pytube
or pytube3
, I would recommend uninstalling that and installing pytubeX
. No need to change imports. I have found it works much more reliably.
Edit: From the comments, if none of these work, try pytube4
Edit: pytube
is now being maintained again!
回答7:
It's an issue with the pytube library files. You can fix this by manually modifying the "extract.py" file inside the pytube folder. Copy and paste this inside the file instead: https://github.com/nficano/pytube/blob/master/pytube/extract.py
回答8:
Fixed
The extract.py codebase is now updated if you're still getting the error after running this command in a terminal or cmd: python -m pip install git+https://github.com/nficano/pytube is because it didn't updated your pytube/extract.py file.
The fix is Copy all the code from codebase and replace in your extract.py file. I hope this will work.
回答9:
In order to avoid this pytube problem, you can use youtube_dl instead. Here's a code which were tested on Windows and on an Android tablet (with the Pydroid3 app). The purpose is to download the audio track of videos referred to in a public playlist.
import os, re
import youtube_dl
from pytube import Playlist
YOUTUBE_STREAM_AUDIO = '140'
if os.name == 'posix':
targetAudioDir = '/storage/emulated/0/Download/Audiobooks/test_youtube_dl'
ydl_opts = {
'outtmpl': targetAudioDir + '/%(title)s.mp3',
'format': 'bestaudio/best',
'quiet': False
}
else:
targetAudioDir = 'D:\\Users\\Jean-Pierre\\Downloads\\Audiobooks\\test_youtube_dl'
ydl_opts = {
'outtmpl': targetAudioDir + '\\%(title)s.%(ext)s',
'format': 'bestaudio/best',
'postprocessors': [{
'key': 'FFmpegExtractAudio',
'preferredcodec': 'mp3',
'preferredquality': '128',
}],
'quiet': False
}
playlistUrl = 'https://www.youtube.com/playlist?list=PLzwWSJNcZTMSFWGrRGKOypqN29MlyuQvn'
playlistObject = Playlist(playlistUrl)
playlistObject._video_regex = re.compile(r"\"url\":\"(/watch\?v=[\w-]*)")
with youtube_dl.YoutubeDL(ydl_opts) as ydl:
for videoUrl in playlistObject.video_urls:
meta = ydl.extract_info(videoUrl, download=False)
videoTitle = meta['title']
print('Video title: ' + videoTitle)
ydl.download([videoUrl])
回答10:
Here's a permanent fix to that! You can try tube_dl.
pip install tube_dl
from tube_dl import Youtube
yt = Youtube('url')
yt.Formats()[0].download()
It uses modular approach and is up to date
More about this can be found at : https://github.com/shekharchander/tube_dl/
回答11:
Try to replace the line 143
base_js = get_ytplayer_config(html)["assets"]["js"]
with
try:
base_js = get_ytplayer_config(html)["assets"]["js"]
except Exception:
pass
来源:https://stackoverflow.com/questions/64492922/pytube-only-works-periodically-keyerror-assets