pytube.exceptions.RegexMatchError
The pytube.exceptions.RegexMatchError is raised when the pytube library fails to find a match for a regular expression pattern.
In the specific case of the error message “get_throttling_function_name: could not find match for multiple”, it means that the regular expression used to extract the throttling function name from the video’s HTML source did not find multiple matches, as expected.
To understand this better, let’s consider an example:
import pytube
url = 'https://www.youtube.com/watch?v=dQw4w9WgXcQ'
video = pytube.YouTube(url)
for caption in video.captions:
print(caption.name)
In the above example, we are trying to get the available captions for a YouTube video using the pytube library. However, if the regular expression used internally by pytube to extract the caption names fails to find multiple matches in the video’s HTML source, it will raise a RegexMatchError with the error message “get_throttling_function_name: could not find match for multiple”.
To resolve this issue, you can try the following steps:
- Update pytube library: Make sure you have the latest version of the pytube library installed. You can do this by running
pip install --upgrade pytube. - Check network connectivity: Ensure that you have a stable internet connection, as a weak or intermittent connection can cause issues while retrieving the video’s HTML source.
- Try a different video: If the error occurs consistently for a specific video, try using a different YouTube video to check if the problem persists. It is possible that the issue is specific to the video’s HTML structure.
- Create a bug report: If none of the above steps resolve the issue, it is recommended to create a bug report on the pytube library’s official repository, providing detailed information about the error and steps to reproduce it.
Note that the actual solution will depend on the specific scenario and the root cause of the RegexMatchError. The steps mentioned above are general suggestions to troubleshoot and resolve the issue.