title: Get yaml key value in python
body: <p>My yaml file is:</p>
  
  <pre><code>clusters:
      test:                           
        tag_cl: tag0
      mtest:                           
        tag_cl: tag1, tag12
      ctest3:                           
        tag_cl: tag2, tag22
  </code></pre>
  
  <p>I want to get value of each <code>tag_cl</code>. I am expecting a below output:</p>
  
  <pre><code>tag0
  tag1, tag12
  tag2, tage22
  </code></pre>
  
  <p>I tried doing:</p>
  
  <pre><code>stream = open('clusters.yml', 'r')
  data = yaml.load(stream)
  var = data.get('clusters').get('test').get('tag_cl')
  </code></pre>
  
  <p>and just wondering if there is a way to have <code>*</code> instead of <code>get('test')</code> so that I can fetch it for all. </p>
  
  <p>Please help</p>