title: Use a Python package from a script without installing it
body: <p>I have a python script which will be executed by the system python (on OSX <code>/usr/bin/python</code>). This script uses an external  package (in my case <a href="http://pyyaml.org/wiki/PyYAML" rel="nofollow noreferrer">PyYaml</a>). </p>
  
  <p>How can I provide the package without <code>pip</code>-installing it into the system python. I do not want to create a virtual environment for this script either, because the script is meant to run on other "vanilla" OSX machines as well.</p>
  
  <p>I'm thinking of creating a directory under the same path where the script resides and "dumping"  the external package  there. But in what form?  And what do I have to do in my script, so that it "sees" the locally dumped package? Just amend <code>sys.path</code>?</p>