[Python] How to extract only audio from downloading video? Python yt-dlp

I need to download only audio from youtube video. For this I use the yt-dlp tool.

In the console, I enter the following command, which downloads the audio as a .webm. I change the extension to .mp3 and everything works fine, it's a regular .mp3 file.

Command: yt-dlp --extract-audio https://www.youtube.com/watch?v=cJuO985zF8E

In the python script I'm using this code:

import yt_dlp
import os

def download_audio(link):
with yt_dlp.YoutubeDL({'extract_audio': True}) as video:
info_dict = video.extract_info(link, download = True)
video_title = info_dict['title']
print(video_title)
#video.download(link)

download_audio('https://www.youtube.com/watch?v=cJuO985zF8E')


But the script does not load the video as an audio file, but as a video. How to solve this problem?

(sorry for my English)

I tried many methods but nothing worked.

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