@utils.positional(<NUM_LIT:2>)<EOL><INDENT>def __init__(self, query, **q_options):<DEDENT>
ctx = tasklets.get_context()<EOL>options = query._make_options(q_options)<EOL>callback = self._extended_callback<EOL>self._iter = ctx.iter_query(query,<EOL>callback=callback,<EOL>pass_batch_into_callback=True,<EOL>options=options)<EOL>self._fut = None<EOL>
Constructor.  Takes a Query and query options.

        This is normally called by Query.iter() or Query.__iter__().