title: pyspark.sql.types.Row to list
body: <p>My initial data set are:</p>
  
  <pre><code>{'ID': [Row(userid=17562323, gross_merchandise_value=6072210944, country=u'ID'), Row(userid=29989283, gross_merchandise_value=4931252224, country=u'ID')]
  </code></pre>
  
  <p>the type of dict value is <code>pyspark.sql.types.Row</code></p>
  
  <p>How to convert the dict to the userid list? like below:</p>
  
  <pre><code>[17562323, 29989283],
  </code></pre>
  
  <p>just get the userid list.</p>