title: Changing namespace separator from colon(:) to underscore (_) in Maya
body: <p>I have imported a file "test_v001.mb" with the namespace "hello". Is there a way where I can remove colon and replace it with underscore in the outliner?</p>
  
  <pre><code>import maya.cmds as cmds
  
  test_file = "D:/test/test_v001.mb"
  
  cmds.file(test_file, i=True, typ='mayaBinary', ra=True, mnc=False, op="v=0;", ns="hello", pr=True, lrd="all")
  </code></pre>
  
  <p>In the screenshot below I have done manually for the third one. I have to do this for a big file so trying to automate it.
  <img src="https://i.stack.imgur.com/DM61S.jpg" alt="Screenshot"> </p>
  
  <p>When I don't give any namespace in the file command then the column is replaced by underscore in the outliner which is exactly what I need like below. But instead of the filename as a default prefix I want "hello" in the outliner. Is this easier to achieve? </p>
  
  <p><img src="https://i.stack.imgur.com/mfYZP.jpg" alt="enter image description here"> </p>
  
  <p>Also if I give namespace as ":" then I don't even get any namespace and column. So adding prefix is another option but that's only available in MEl.</p>