how to download playlist with youtube-dl code example

Example 1: youtube-dl playlist download

youtube-dl -i -f mp4 --yes-playlist 'https://www.youtube.com/watch?v=7Vy8970q0Xc&list=PLwJ2VKmefmxpUJEGB1ff6yUZ5Zd7Gegn2'

Example 2: download playlist youtube-dl

youtube-dl -i PLwJ2VKmefmxpUJEGB1ff6yUZ5Zd7Gegn2