import requests

def hik_access_token(client_id,client_secret):
  data = {
    "client_id": client_id,
    "client_secret": client_secret,
    "grant_type": "client_credentials"
  }
  headers = {"content-type": "application/x-www-form-urlencoded"}
  response =requests.post(url="https://api2.hik-cloud.com/oauth/token",headers=headers,data=data)
  response_json = response.json()
  hik_access_token = response_json["access_token"]
  return hik_access_token