urllib.request

[Aspire2Inspire]

I'm guessing there is Javascript on the page that YouTube loads and you wont see on requests. That being said, try using some headers so that YouTube doesn't redirect your connection or block your request altogether.

import requests 
from bs4 import BeautifulSoup 
    
headers = {"user-agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/87.0.4280.88 Safari/537.36"}
doc = "https://youtu.be/jrPII7KfYx0"
res = requests.get(doc, headers=headers)    
soup = BeautifulSoup(res.content, "html.parser")   
tag = soup.body  
for string in tag.strings: 
    print(string)