Python requests OAuth2 client credentials failing with 401

NICE CXone API & Integrations
1

Trying to grab an access token using the client credentials flow in Python. Getting a 401 back even though the client ID and secret are correct.

import requests

url = "https://api.mypurecloud.com/oauth/token"
data = {
 "grant_type": "client_credentials",
 "client_id": "MY_ID",
 "client_secret": "MY_SECRET"
}
headers = {"Content-Type": "application/x-www-form-urlencoded"}

response = requests.post(url, data=data, headers=headers)
print(response.status_code, response.text)

Docs say this should work. What’s wrong?