could not Extract Value from Json with python

This is not the duplicate ticket.

I have checked the similar threads, like:

Parsing JSON with Python: TypeError: list indices must be integers, not str

Python Extract Value from Json

But none of them work for me.

The background of my question:

I use the REST API Groups - Get Groups with filter:

GET https://api.powerbi.com/v1.0/myorg/groups?$filter={$filter}&$top={$top}&$skip={$skip}

My code:

import json, requests, pandas as pd
try:
    from azure.identity import ClientSecretCredential
except Exception:
    #  !pip install azure.identity
     from azure.identity import ClientSecretCredential


tenant = 'xxxxxxxxxx'
client = 'yyyyyyyyyyy'
client_secret = 'zzzzzzzzzzzzzz'
api = 'https://analysis.windows.net/powerbi/api/.default'


# Generates the access token for the Service Principal
auth = ClientSecretCredential(authority = 'https://login.microsoftonline.com/',
                                                        tenant_id = tenant,
                                                        client_id = client,
                                                        client_secret = client_secret)
access_token = auth.get_token(api)
access_token = access_token.token

print('\nSuccessfully authenticated.')   

base_url = 'https://api.powerbi.com/v1.0/myorg/'
header = {'Authorization': f'Bearer {access_token}'}

base_url_expand = f'{base_url}groups?$filter=name%20eq%20%27TestName%27'

# HTTP GET Request
groups = requests.get(base_url_expand, headers=header)
# Response code (200 = Success; 401 = Unauthorized; 404 = Bad Request)
print(groups)

And the result of the groups is <Response [200]>.

Then I want to get the id based on the name in the Response body:

So, I use the following the code to get the content of the groups:

try:
    groups = json.loads(groups.content)

    # Pretty-prints the JSON
    print(json.dumps(groups, indent=4, sort_keys=True))
        
except Exception as e:
    print('\nRequest failed:', e)

The print result is：

{
    "@odata.context": "http://wabi-south-east-asia-redirect.analysis.windows.net/v1.0/myorg/$metadata#groups",
    "@odata.count": 1,
    "value": [
        {
            "id": "bf8f466d-35b0-4620-a11e-xxxxxxx",
            "isOnDedicatedCapacity": false,
            "isReadOnly": false,
            "name": "TestName",
            "type": "Workspace"
        }
    ]
}

However, I could not extract value id from the Json file.

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