title: Tool to help eliminate wildcard imports
body: <p>I'm refactoring and eliminating wildcard imports on some fairly monolithic code. </p>
  
  <p>Pylint seems to do a great job of listing all the unused imports that come along with a wildcard import, but what i wish it did was provide a list of <em>used</em> imports so I can quickly replace the wildcard import.  Any quick ways of doing this?  I'm about to go parse the output of pyLint and do a <code>set.difference()</code> on this and the <code>dir()</code> of the imported module.  But I bet there's some tool/procedure I'm not aware of.</p>