title: Sublime Text 3 - Python 3 Build System not importing Python3-specific modules
body: <p>I am on Ubuntu 17.04 LTS, and the default Sublime Text 3 build system fails to import modules that are only for Python 3. For example:</p>
  
  <pre><code>&gt;&gt;&gt; import urllib.request
  ImportError: No module named request
  </code></pre>
  
  <p>Whereas I can successfully import other modules. What can I do?</p>
  
  <p>Thanks in advance.</p>