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sdk参考下载地址：
https://developer.aliyun.com/tools/sdk#/python
pip安装sdk:
pip install aliyun-python-sdk-ecs
用法：
api概览：
https://help.aliyun.com/document_detail/25485.html?spm=a2c4g.11186623.6.921.26b51f3cUQZKq7
找到我们需要的操作，例如我们需要查询所有服务器详细状态，我们可以去上述网站找到对应的api关键字：
DescribeInstances
api调用方法参考：
https://api.aliyun.com/?spm=a2c4g.11186623.1280361.64.24de431djvq3ov#/?product=Ecs
然后我们去上面网站找到调用该api的python方法：
修改对应的key,secret就可以获取到主机信息了：
from aliyunsdkcore.client import AcsClient
from aliyunsdkcore.request import CommonRequest
client = AcsClient('xxxxx', 'xxxxx', 'cn-shenzhen')
request = CommonRequest()
request.set_accept_format('json')
request.set_domain('ecs.aliyuncs.com')
request.set_method('POST')
request.set_version('2014-05-26')
request.set_action_name('DescribeInstances')
response = client.do_action(request)
# python2: print(response)
print(str(response, encoding = 'utf-8'))