pytube: RegexMatchError: get_throttling_function_name: could not find match for multiple

Before creating an issue

I have confirmed that I am on the latest version of pytube by installing from the source. I did this by running !pip install git+https://github.com/pytube/pytube.

Describe the bug

I’m encountering a RegexMatchError when trying to download a YouTube video using pytube. The error message suggests that the function get_throttling_function_name could not find a match for multiple.

To Reproduce

The video URL that is causing the error is https://www.youtube.com/watch?v=Xg9ihH15Uto&ab_channel=Fireship.

Here is the code where the problem is occurring:

from pytube import YouTube

def Download(link):
    youtubeObject = YouTube(link)
    youtubeObject = youtubeObject.streams.get_highest_resolution()
    try:
        youtubeObject.download()
    except:
        print("An error has occurred")
    print("Download is completed successfully")

link = 'https://www.youtube.com/watch?v=Xg9ihH15Uto&ab_channel=Fireship'
Download(link)

Expected behavior

I expected the video to be downloaded without any errors.

Output

Here is the full traceback for the exception:

RegexMatchError: get_throttling_function_name: could not find match for multiple

System information

Python version: 3.10.12
Pytube version: 15.0.0
Command used to install pytube: !pip install --upgrade pytube

About this issue

Original URL
State: open
Created a year ago
Reactions: 3
Comments: 25

Most upvoted comments

solved

fix the problem by removing the ; from the pattern in line 287 of pytube.cipher

+42

srccircumflex on Jul 2, 2023

Changing line 287 of pytube.cipher to exactly 'var {nfunc}\\s*=\\s*(\\[.+?])'.format( works fine for me. Perhaps the java scripts differ depending on the region.

+21

srccircumflex on Jul 2, 2023

In the second repexp, the square brackets must be mandatory. Need to remove the question mark after the group with them.

r'a\.[a-zA-Z]\s*&&\s*\([a-z]\s*=\s*a\.get\("n"\)\)\s*&&.*?\|\|\s*([a-z]+)',
r'\([a-z]\s*=\s*([a-zA-Z0-9$]+)(\[\d+\])\([a-z]\)',

YuriiMaiboroda on Aug 9, 2023

erasing the ; helped me too thanks a lot @srccircumflex

Highfish93 on Jul 2, 2023

if erasing the semicolon on line 287 does not work you can change the lines 272 and 273 to:

r’a.[a-zA-Z]\s*&&\s*([a-z]\s*=\sa.get(“n”))\s&&.?||\s([a-z]+)‘, r’([a-z]\s*=\s*([a-zA-Z0-9$]+)([\d+])?([a-z])', ]

khoul911 on Jul 11, 2023

Erasing the semicolon in line 287 helped me too.⚡ Thanks a lot @srccircumflex

AkshayShineKrishna on Jul 10, 2023

Erased the semicolon on line 287 of ‘cipher.py’ and it got fixed. thank you so much @srccircumflex 🌟

allenthomas01 on Jul 10, 2023

Erasing the semicolon in line 287 helped me too. Thanks a lot @srccircumflex!

klebersondrl on Jul 9, 2023

solved

fix the problem by removing the ; from the pattern in line 287 of pytube.cipher

Thank you very much @srccircumflex. Removing ; solved the problem !

raghunathsmusings on Jul 5, 2023

@srccircumflex Your trick works even on Python 3.11

Armag67 on Jul 3, 2023

removing the ; inside the regex pattern in line 287 of file “pytube.cipher” totally fixed this! Thanks to @srccircumflex

Realalirezayazdanpanah on Jul 2, 2023

erasing the ; helped me too thanks a lot @srccircumflex

yaitskeshav on Jul 2, 2023

I guess that it has to do with something on YouTube’s end. I’m getting the same Error.

schnow265 on Jul 1, 2023