title: Error Importing Glib
body: <p>When trying to import glib in python 3 using <code>from gi.repository import glib</code>, I get an error saying:</p>
  
  <pre><code>Traceback (most recent call last):
    File "&lt;frozen importlib._bootstrap&gt;", line 2135, in _find_spec
  AttributeError: 'DynamicImporter' object has no attribute 'find_spec'
  
  During handling of the above exception, another exception occurred:
  
  Traceback (most recent call last):
    File "&lt;stdin&gt;", line 1, in &lt;module&gt;
    File "/usr/lib/python3/dist-packages/gi/importer.py", line 53, in find_module
      'introspection typelib not found' % namespace)
  ImportError: cannot import name glib, introspection typelib not found
  </code></pre>
  
  <p>I installed all the python glib/dev packages using apt-get on Ubuntu 14.04. Attempting to import the module in python 2 says the module doesn't exist.</p>
  
  <p>How do I fix this?</p>