title: Ansible-galaxy throws ImportError: No module named yaml
body: <p><br>
  When I try to install ansible role, I see this exception.</p>
  
  <pre><code> $ ansible-galaxy install zzet.postgresql
   Traceback (most recent call last):
   File "/Users/myHomeDir/.homebrew/Cellar/ansible/1.4.3/libexec/bin/ansible-galaxy", line 34, in &lt;module&gt;
   import yaml
   ImportError: No module named yaml
  </code></pre>
  
  <p>OS: Mac Os Maverick<br>
  Ansible: 1.4.3</p>
  
  <p>Does anyone know how to fix it?</p>