def np_datetime64_compat(s, *args, **kwargs):

    if not _np_version_under1p11:
        s = tz_replacer(s)
    return np.datetime64(s, *args, **kwargs)
Overriding a column raises an error.
dataset/ETHPy150Open pydata/pandas/pandas/compat/numpy_compat.py/np_datetime64_compat--crossover with--dataset/ETHPy150Open zzzeek/sqlalchemy/test/orm/test_mapper.py/MapperTest.test_override_1