List Plex Libraries

# run 'pip3 install plexapi' first
# run the code below with python 3.x

from plexapi.myplex import MyPlexAccount
account = MyPlexAccount('your_username', 'your_password')
plex = account.resource('your_server').connect()

libraries = plex.library.sections()

for library in libraries:
    print(library.title)