def __init__(self, k_range, query_spec):
    self._key_range = k_range
    self._query_spec = query_spec
    self._cursor = None
    self._query = None
Init.
dataset/ETHPy150Open GoogleCloudPlatform/appengine-mapreduce/python/src/mapreduce/datastore_range_iterators.py/AbstractKeyRangeIterator.__init__