title: "required gtk+ version 3.10, current version is 2.24" - Glade+Python 2.7
body: <p>I want to use Glade Interface Designer with Python 2.7, but when I try to run my code I get the following error:</p>
  
  <pre><code>:required gtk+ version 3.10, current version is 2.24
  </code></pre>
  
  <p>I have the gtk+ 3.10 installed, but I don't know how to change the path to use the 3.10 version.</p>
  
  <p>I'm using Ubuntu 14.04 LTS.</p>