title: Storing OAuth Token in Python Library
body: <p>I have a Python service which imports a library that talks to the PayPal API. There is a config file that is passed into the library <code>__init__()</code> which contains the PayPal API username and password. </p>
  
  <p>Calling the PayPal API token endpoint with the username and password will return a token used to authenticate during the pay call. However, this token lasts for 90 minutes and should be reused. </p>
  
  <p>There are multiple instances of this service running on different servers and they need to all share this one secret token. </p>
  
  <p>What would the best way of storing this 9 minute token be?</p>