title: User Authentication in Pyramid
body: <p>I'm building a webapp and needed to choose between Django and Pyramid.  I decided to go with Pyramid.</p>
  
  <p>I understand Pyramid comes with its own authentication/authorization framework which looks nice.  But I haven't seen anywhere in Pyramid where users/groups/permissions are defined.  In Django these things come for free.</p>
  
  <p>I'm using SQLAlchemy and was wondering if there are similar users/groups/permissions already built that I can import.  I'd rather not define these objects/mappings and hash/salting of passwords myself.</p>
  
  <p><a href="https://docs.djangoproject.com/en/dev/topics/auth/">Django's definitions</a> of these things are pretty much all I need.</p>
  
  <p>Can anyone point my to something I can use?  Or do I need to roll my own?</p>