def __iter__(self):
        warnings.warn("DB-API extension cursor.__iter__() used")
        return self
Verify that a split tract is crosswalked correctly.
dataset/ETHPy150Open crate/crate-python/src/crate/client/cursor.py/Cursor.__iter__--crossover with--dataset/ETHPy150Open ireapps/census/dataprocessing/tests_sf.py/TestTracts.test_tract_split_housing