如何基于python对接钉钉并获取access_token

api_url = "https://oapi.dingtalk.com/gettoken?appkey=%s&appsecret=%s"%(appkey,appsecret)

def get_token():
  # try:
  res = requests.get(api_url)
  if res.status_code == 200:
    str_res = res.text
    token = (json.loads(str_res)).get('access_token')
    return token

def departList():
  # 所有部门信息
  url = 'https://oapi.dingtalk.com/department/list?access_token={}'.format(get_token())
  ret = json.loads(requests.get(url).text)
  department = ret.get('department')
  departList = []
  for department_info in department:
    departdict = {}
    departdict['name'] = department_info.get('name')
    departdict['id'] = department_info.get('id')
    departdict['parentid'] = department_info.get('parentid')
    departList.append(departdict)
  return departList