title: List top Nodes / siblings in maya outliner
body: <p>Is there a way to only list top nodes in the <code>outliner</code>, without traversing all the depths?</p>
  
  <pre><code>import maya.cmds as cmds
  cmds.listRelatives("master", noIntermediate=True)
  </code></pre>
  
  <p>I was kind of expecting that there will be a key like <code>world</code> to search the topnodes in the outliner.</p>
  
  <p>Example Outliner:</p>
  
  <pre><code>#--- pSphere1
  #---group1
   ------box1
  #pSphere2
  </code></pre>
  
  <p>I only want <code>pSphere1</code>, <code>pSphere2</code> and <code>group1</code> not the children of those.</p>