Index: docs/topics/http/sessions.txt
===================================================================
--- docs/topics/http/sessions.txt	(revisión: 14844)
+++ docs/topics/http/sessions.txt	(copia de trabajo)
@@ -307,12 +307,25 @@
 An API is available to manipulate session data outside of a view::
 
     >>> from django.contrib.sessions.backends.db import SessionStore
+    >>> import datetime
     >>> s = SessionStore(session_key='2b1189a188b44ad18c35e113ac6ceead')
     >>> s['last_login'] = datetime.datetime(2005, 8, 20, 13, 35, 10)
     >>> s['last_login']
     datetime.datetime(2005, 8, 20, 13, 35, 0)
     >>> s.save()
 
+If no ``session_key`` is provided, one will be generated automatically:
+
+    >>> from django.contrib.sessions.backends.db import SessionStore
+    >>> import datetime
+    >>> s = SessionStore()
+    >>> s['last_login'] = datetime.datetime(2005, 8, 20, 13, 35, 10)
+    >>> s['last_login']
+    datetime.datetime(2005, 8, 20, 13, 35, 0)
+    >>> s.save()
+    >>> s.session_key
+    '2b1189a188b44ad18c35e113ac6ceead'
+
 If you're using the ``django.contrib.sessions.backends.db`` backend, each
 session is just a normal Django model. The ``Session`` model is defined in
 ``django/contrib/sessions/models.py``. Because it's a normal model, you can