title: In django, are all session data deleted if a user logs out?
body: <p>I need to track some information on users, but would like to retain it for a fixed time period, say a week.  </p>
  
  <p>If I set this value via request.sessions, and the user logs out, can I retrieve it if they log back in later?  This all assumes that my sessions are normally set to expire in 30 days, if the user neVer logs out.</p>
  
  <p>While thinking about the above problem, I decided to store the data in a table, but I would still like to know the answer to above for referenCe.  I also decided not to use cookies due to unreliability.</p>