issue is with data/json...

try the below -

from azure.identity import DefaultAzureCredential

import requests

default_scope = "2ff814a6-3304-4ab8-85cb-cd0e6f879c1d/.default"

credential = DefaultAzureCredential()

token = credential.get_token(default_scope)

access_token = str(token.token)

url="https://adb-xxxxx.azuredatabricks.net/api/2.0/workspace/mkdirs"

headers={"Authorization":"Bearer "+access_token, "Content-Type": "application/x-www-form-urlencoded"}

response = requests.post(

 url=url,

 headers=headers,

 data = '{"path":"/dpaas-ids2/test"}'

)

print(response)