Python, SQLAlchemy: Query, filter and return value

Say I run a query with a filter,

Session.query(model.Place).join(model.Location).filter(model.Location.great_circle_distance(location) < r)

In order to get the results of this query, it had to have calculated model.Location.great_circle_distance(location). After running this quer开发者_高级运维y, I can get a list of Places which match that criteron of having a great_circle_distance less than r, but, is there any way to return both the result of that calculation and the list of Places that match that query in one fell swoop?

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You could use join, column_property and mapper to derive a class that is, essentially, a database view. But unless you intended to use that in more than one place, or the number of rows is huge, I would just do a separate query to get the Location objects and use map to compute the circle distances.