Wrting python script that uses youtube-dl to extract just only the download link?

Question

I'm new to python and I'm writing a python script to use youtube-dl to extract only download link, exactly like link given by the console (youtube-dl --get-url url). I don't want to download the media, I just need the download-link from my script.

Answer 1

>>> from youtube_dl import YoutubeDL # $ pip install youtube-dl
>>> url = 'https://www.youtube.com/watch?v=pvAsqPbz9Ro'
>>> ydl = YoutubeDL()
>>> r = ydl.extract_info(url, download=False)
[youtube] pvAsqPbz9Ro: Downloading webpage
[youtube] pvAsqPbz9Ro: Downloading video info webpage
[youtube] pvAsqPbz9Ro: Extracting video information
[youtube] pvAsqPbz9Ro: Downloading DASH manifest
[youtube] pvAsqPbz9Ro: Downloading DASH manifest
>>> r['url']
u'https://r6---sn-n8v7zne7.googlevideo.com/videoplayback?...&ipbits=0'

If there are several media formats then to get media url for the last format:

with youtube_dl.YoutubeDL(dict(forceurl=True)) as ydl:
    r = ydl.extract_info(url, download=False)
    media_url = r['formats'][-1]['url']