If an object is passed as a parameter, extract its ID.

This allows things like:
   photos = client.photos.list()
   client.photos.delete(photos)

openphoto/objects.py

@@ -1,4 +1,4 @@
-from openphoto_http import OpenPhotoError, NotImplementedError
+from errors import *
 
 class OpenPhotoObject:
     """ Base object supporting the storage of custom fields as attributes """