Does a video have subtitles on YT?

yttimedtext.py

#!/usr/bin/env python3
import requests

def hasTimedText(v, lang="de"):
    url = "https://www.youtube.com/api/timedtext?caps=asr&key=yttt1&v=%s&lang=%s&fmt=srv2" % (v, lang)
    response = requests.get(url)
    return bool(response.text) # Empty if not available

if __name__ == "__main__":
    print(hasTimedText("Y6JsEja15Vk"))
    print(hasTimedText("oajrmwCALmc"))