Extracting JSON data by index in Python-CodePudding

There are many similar paths in my full JSON data result, but I want to pull out specific instances. I thought the best way to do that would be to simply indicate the index from which I want to pull the data.

Here's a snippet of my JSON:

"data":[
      {
         "id":"xxxx",
         "account_type":"None",
         "description":"Lorem Ipsum",
         "engagement_score":xx,
         "jumpers":xxxxx,
         "friends":xxx,
         "global":xxxxxxx,
         "hidden":true,
         "location":"xxxx, xx",
         "name":"xxxxx",

Here's what I ran:

url = 'my_url'
access_token = 'my_token'

result = requests.get(url,headers={'Content-Type':'application/json','Authorization': 'Bearer {}'.format(access_token)})
json = result.json()
company = json['data'][0,9]
print(company)

Where [0] is the first dataset beneath "data", and [9] for the "name" position. Obviously, this isn't the right way to do it, given the output TypeError: list indices must be integers or slices, not tuple

How do I access the first instance of 'name' by index? How does this process work for pulling other information by index?

Thanks in advance!

CodePudding user response：

In Python, json data usually is handled as a dictionary, so the easiest way to access information is by the dictionary key. Here is an example to access the "name" parameter in your json data

import json

data = """
{
  "data": [
    {
      "id": "xxxx",
      "account_type": "None",
      "description": "Lorem Ipsum",
      "engagement_score": "xx",
      "jumpers": "xxxxx",
      "friends": "xxx",
      "global": "xxxxxxx",
      "hidden": true,
      "location": "xxxx, xx",
      "name": "your_name"
    }
  ]
}

"""

json_data = json.loads(data)

print(json_data['data'][0]['name'])

Your code returned an error because you can't use a Tuple to index a list in Python, to index nested lists, just sequence the index, like this:

data = [
    [1, 2, 3],
    [4, 5, 6]
]

print(data[0][0])

CodePudding user response：

In Python as of version 3.6, insertion order of keys in dictionaries is preserved. So it is also possible to access dictionary values based on insertion order (i.e. integer index). See the example below that shows accessing the value of attribute 'name' using its index of 3 which retrieves the correct value of 'xxxxx'.

Code:

import json

data_json='''[{"id":"xxxx","account_type":"None","attrib":true,"name":"xxxxx"}]'''

data_py = json.loads(data_json)
print("data_json",data_json)
print("data_py:",data_py)
print("name:",list(data_py[0].values())[3])

Output:

data_json [{"id":"xxxx","account_type":"None","attrib":true,"name":"xxxxx"}]
data_py: [{'id': 'xxxx', 'account_type': 'None', 'attrib': True, 'name': 'xxxxx'}]
name: xxxxx