红帽全球峰会3.7. 在集合中更新资源
要更新资源，您必须从它所在的集合中检索它，修改所需的参数，然后调用资源的
update 方法来保存更改。参数修改通过使用检索到的资源的 set_* 方法执行。
例 3.7. 更新资源
在本例中，名为
DemoDataCenter 的数据中心已更新其描述。
dc = api.datacenters.get("DemoDataCenter")
dc.set_description("This data center description provided using the Python SDK")
dc.update()
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