es_search_unknown.py

#!/usr/bin/env python3

from elasticsearch import Elasticsearch
import json

ES_INDEX='stackoverflow-surveys-2016'

es = Elasticsearch(hosts=['192.168.56.201'])

results = es.search(index=ES_INDEX, q='*', size=1)
for key, value in results['hits'].items():
    if key == 'hits':
        print(json.dumps(value, sort_keys=True, indent=2))