update from Atlas with major reorg

19-dyn-attr-prop/oscon/demo_schedule2.py

@@ -0,0 +1,23 @@
+import shelve
+
+from schedule2 import DB_NAME, CONFERENCE, load_db
+from schedule2 import DbRecord, Event
+
+with shelve.open(DB_NAME) as db:
+    if CONFERENCE not in db:
+        load_db(db)
+    
+    DbRecord.set_db(db)
+    event = DbRecord.fetch('event.33950')
+    print(event)
+    print(event.venue)
+    print(event.venue.name)
+    for spkr in event.speakers:
+        print('{0.serial}: {0.name}'.format(spkr))
+        
+    print(repr(Event.venue))
+    
+    event2 = DbRecord.fetch('event.33451')
+    print(event2)
+    print(event2.fetch)
+    print(event2.venue)