title: How to get a list of all indexes in python-elasticsearch
body: <p>How would I get a list of the names of an index in Python? Here is what I have so far:</p>
  
  <pre><code>&gt;&gt;&gt; es=e.es
  &gt;&gt;&gt; es
  &lt;Elasticsearch([{'host': '14555f777d8097.us-east-1.aws.found.io', 'port': 9200}])&gt;
  &gt;&gt;&gt; es.indices
  &lt;elasticsearch.client.indices.IndicesClient object at 0x10de86790&gt;
  # how to get a list of all indexes in this cluster?
  </code></pre>