# run python -m pip install git+https://github.com/nficano/pytube
# VERY IMPORTANT, IT WILL NOT WORK IF YOU DON'T RUN THAT
import pytube
url = 'https://www.youtube.com/YoutubeLinkGoesHere'
video = pytube.YouTube(url)
stream = video.streams.get_by_itag(22)
stream.download(filename='video')