ebernhardson@elastic1050:~$ cat test.py 
import elasticsearch
import sys

es = elasticsearch.Elasticsearch('http://search.svc.eqiad.wmnet:9200')
for index in sys.stdin:
    index = index.strip()
    aliases = es.indices.get_alias(index)
    if not aliases:
        print("Deleting index with no aliases: {}".format(index))
        es.indices.delete(index)
    else:
        print("WARNING: {} has live aliases: {}".format(index, aliases))

ebernhardson@elastic1050:~$ echo enwiki_content_1582848800 | /srv/deployment/search/mjolnir/deploy/venv/bin/python3 test.py
WARNING: enwiki_content_1582848800 has live aliases: {'enwiki_content_1582848800': {'aliases': {'enwiki': {}, 'enwiki_content': {}}}}