access individual fields using elastic search dsl in python

Question

Is the below accurate or should it be something else ?

I am getting the expected results just checking if this is the most efficient way to access individual (nested) fields.

from elasticsearch import Elasticsearch
from elasticsearch_dsl import Search, Q

import json
client = Elasticsearch('my_server')

policy_number = 'POLICY1234'
s = Search(using=client, index = "my_index").query("term",policyNumber=policy_number.lower())
es_response = s.execute()

for hits in es_response:
   print hits['policyNumber']
   print hits.party[0]['fullName']
   print hits.party[0].partyAddress[0]['address1']
   print hits.party[0].partyAddress[0]['city']
   print hits.party[0].phoneList[0]['phoneNumber']

Honza Král · Accepted Answer · 2017-03-29 17:47:13Z

2

You don't need to call execute manually and you don't have to use [] to access fields by name, you can just use the attribute access:

for hit in s:
   print hit.policyNumber
   print hit.party[0].fullName
   print hit.party[0].partyAddress[0].address1
   print hit.party[0].partyAddress[0].city
   print hit.party[0].phoneList[0].phoneNumber

answered Mar 29, 2017 at 17:47

Honza Král

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2 Comments

Naresh MG Over a year ago

Good to know did not know that I could skip the execute. If I were to not use a for loop and cared only about the 1st hit I would have >>> es_response = s.execute() >>> print es_response[0].policyNumber >>> print es_response[0].party[0].fullName >>> print es_response[0].party[0].phoneList[0].phoneNumber without a for loop and without calling execute() how do I do this please ? >>> print s[0].policyNumber does not work

Honza Král Over a year ago

That one you have to execute because slicing over the Search object just introduces from/size limits.

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