title: How to check values of the .all() with flask-SqlAlchemy?
body: <p>I'd like to check the values of all with <code>pdb</code> but the <code>p</code> did not output the values of all. But this code successfly can pass and <code>return 'success'</code>.　Also, the database has the correct values</p>
  
  <p>flask code</p>
  
  <pre><code>    import pdb;pdb.set_trace()
      all = db.session.query(UserToken).filter(UserToken._token == _token).all()
      if not all:
           return 'error'
      return 'success'
  </code></pre>
  
  <p>debbuger result</p>
  
  <pre><code>(Pdb) p all
  (Pdb) p db.session.query(UserToken).filter(UserToken._token == _token).all()
  (Pdb) 
  </code></pre>