title: Display IPython variables without entering using whos
body: <p>Is there a way to view a list of the IPython variables currently in the workspace without having to send the command 'whos'.  I often find myself not remembering what variable names I want to use while typing a command.  </p>
  
  <p>In IPython, I have to erase the current line I was typing and send a 'whos' statement to see which variables are currently available.  Normally, in GUI based tools like MATLAB I would just look to the right at my Workspace Variable window.</p>