Started with the view for showing students who have been assigned to multiple slots. The basics that are in this patch will be used by Mario Ferraro to write the actual view. Patch by: Lennard de Rijk Reviewed by: to-be-reviewed

from query import *
from subqueries import *
from where import AND, OR
from datastructures import EmptyResultSet

__all__ = ['Query', 'AND', 'OR', 'EmptyResultSet']