Fix some style guide issues: keyword arguments are supposed to always be
supplied using the keyword argument name=value.
http://code.google.com/p/soc/wiki/PythonStyleGuide#Default_Argument_Values
from query import *
from subqueries import *
from where import AND, OR
from datastructures import EmptyResultSet
__all__ = ['Query', 'AND', 'OR', 'EmptyResultSet']