Installing Packages :
You need to install bellow package -
pip install pytube
Now write bellow code and run it
from pytube import Playlist
playlist_url = input("Enter Playlist URL :")
playlist = Playlist(playlist_url)
for video in playlist.videos:
video.streams.get_highest_resolution().download
Now enter your play list url here
Enter Playlist URL : https://www.youtube.com/watch?v=wq1of6ScTK4&list=RDGMEM-k_QLHdJQ0wCKGxOayCJHQVMwq1of6ScTK4&start_radio=1