Create a Plex collection from a text file list of rating keys.

collection_from_rating_keys.py

#!/usr/bin/env python
# -*- coding: utf-8 -*-
#
# Description:  Create a Plex collection from a text file list of rating keys.
# Author:       /u/SwiftPanda16
# Requires:     plexapi

from plexapi.server import PlexServer


### EDIT SETTINGS ###

PLEX_URL = 'http://localhost:32400'
PLEX_TOKEN = 'xxxxxxxxxx'
PLEX_LIBRARY_NAME = 'Movies'
COLLECTION_NAME = 'New Collection'
TEXT_FILE_LIST = '/path/to/rating_keys.txt'  # One rating key (media ID) per line


### CODE BELOW ###

def main():
    with open(TEXT_FILE_LIST, 'r') as f:
        ratingKeys = [int(r.strip()) for r in f.readlines()]

    plex = PlexServer(PLEX_URL, PLEX_TOKEN)
    items = plex.fetchItems(ratingKeys)
    library = plex.library.section(PLEX_LIBRARY_NAME)
    library.batchMultiEdits(items).addCollection(COLLECTION_NAME).saveMultiEdits()


if __name__ == "__main__":
    main()