title: Add a directory to Python sys.path so that it's included each time I use Python
body: <p>Currently, when trying to reference some library code, I'm doing this at the top of my python file:</p>
  
  <pre><code>import sys
  sys.path.append('''C:\code\my-library''')
  from my-library import my-library
  </code></pre>
  
  <p>Then, <code>my-library</code> will be part of sys.path for as long as the session is active. If I start a new file, I have to remember to include <code>sys.path.append</code> again.</p>
  
  <p>I feel like there must be a much better way of doing this. How can I make <code>my-library</code> available to every python script on my windows machine without having to use <code>sys.path.append</code> each time?</p>