lenskit.data.QueryIDKey
=======================

.. py:class:: lenskit.data.QueryIDKey
   :canonical: lenskit.data._collection.QueryIDKey

   Bases: :py:obj:`NamedTuple`


   Key type for query IDs.  This is used for :ref:`item list collections
   <item-list-collections>` that are keyed by query ID, a common setup for
   recommendation runs and test data.


   .. py:attribute:: query_id
      :type:  lenskit.data.types.ID