How to extract desired field from nested dictionary in python-CodePudding

In the below-nested dictionary, I want term present in "fields" value in "field_name" string.

response = {
  "indices": [
    "device",
  ],
  "fields": {
    "hostname": {
      "text": {
        "type": "text",
        "searchable": true,
        "aggregatable": false
      }
    }
    }
    }

My code-

    for field in response['fields'][field]:
         if field['fields'][field] == field_name:

Error-

if field['fields'] == field_name:
TypeError: string indices must be integers

Expected Output-

fieldname=hostname

In below example dictionary-I am able to extract "name" and "type" using below code.It works fine..

{
  "name": "hostname",
  "type": "string",
  "esTypes": [
    "text"
  ],  
  "searchable": true,
  "aggregatable": false,
  "readFromDocValues": false
}

Code-

    for field in response['fields']:
        if field['name'] == field_name:
            d_type = field['esTypes']

CodePudding user response：

Can you explain what you're hoping to achieve here in more detail? If you are trying to extract the data from fields, you can access it via

response['fields']

Or if you want to get the data from hostname, you can access it via

response['fields']['hostname']

Happy to help further if this isn't what you intended.

CodePudding user response：

Try to use this

for field in response['fields']:
    if field == field_name:
        d_type = response['fields'][field]['esTypes']

field - key of dictionary

If field_name is 'hostname', then response['fields'][field] inside loop get dictionary:

"text": {
   "type": "text",
   "searchable": True,
   "aggregatable": False
}