async def image_info(ns={}):
    """
    获取镜像信息
    """
    import aiohttp
    ecs_url = 'http://api.capitalonline.net/ecs/v1.1'
    action = "DescribeImages"
    method = "POST"
    body = {
        "AvailableZoneCode": ns.get('AvailableZoneCode')
    }
    url = get_signature(action, method, ecs_url)
    async with aiohttp.ClientSession() as session:
        async with session.request(method, url, json=body) as response:
            resp = await response.text()
            result = json.loads(resp)
            if result['Code'] == 'Success':
                result['status'] = True
                result.pop('Code')
                result['data'] = result.pop('Data')
                result['msg'] = result.pop('Msg')
            else:
                result['status'] = False
                result['msg'] = result.pop('Msg')
            return result

ret = await image_info(params_kw)
return ret