Which of the following is a Python dictionary?

dnac = {
    "host": "sandboxdnac.cisco.com",
    "port": 443,
    "username": "devnetuser",
    "password": "Cisco123!"
}

[users[root|Jason|Jamie|Luke]]

def dnac_login(host, username, password):
    url = "https://{}/api/system/v1/auth/token".
          format(host)
    response = requests.request("POST", url,
               auth=HTTPBasicAuth(username, password),
               headers=headers, verify=False)
    return response.json()["Token"]

print(dnac_devices)