issue_comments: 872938084

Also there is an issue when: fish cd xarray pip install -e . pip install h5netcdf pytest-xdist netcdf4 py.test -n 2 xarray/tests/test_backends.py ```python ======================================================== FAILURES ========================================================= ______ TestH5NetCDFFileObject.test_open_fileobj _________ [gw2] linux -- Python 3.9.5 /home/joeperdefloep/miniconda3/envs/xr-dev/bin/python3.9

self = <xarray.tests.test_backends.TestH5NetCDFFileObject object at 0x7f7e841a4220>

def test_open_fileobj(self):
    # open in-memory datasets instead of local file paths
    expected = create_test_data().drop_vars("dim3")
    expected.attrs["foo"] = "bar"
    with create_tmp_file() as tmp_file:
        expected.to_netcdf(tmp_file, engine="h5netcdf")

        with open(tmp_file, "rb") as f:
            with open_dataset(f, engine="h5netcdf") as actual:
                assert_identical(expected, actual)

            f.seek(0)
            with open_dataset(f) as actual:
                assert_identical(expected, actual)

            f.seek(0)
            with BytesIO(f.read()) as bio:
                with open_dataset(bio, engine="h5netcdf") as actual:
                    assert_identical(expected, actual)

            f.seek(0)
            with pytest.raises(TypeError, match="not a valid NetCDF 3"):

              open_dataset(f, engine="scipy")

/mnt/e/Git/xarray/xarray/tests/test_backends.py:2887:

/mnt/e/Git/xarray/xarray/backends/api.py:483: in open_dataset backend = plugins.get_backend(engine)

engine = 'scipy'

def get_backend(engine):
    """Select open_dataset method based on current engine."""
    if isinstance(engine, str):
        engines = list_engines()
        if engine not in engines:

          raise ValueError(
                f"unrecognized engine {engine} must be one of: {list(engines)}"
            )

E ValueError: unrecognized engine scipy must be one of: ['netcdf4', 'h5netcdf', 'store']

/mnt/e/Git/xarray/xarray/backends/plugins.py:156: ValueError ================================================= short test summary info ================================================= FAILED xarray/tests/test_backends.py::TestH5NetCDFFileObject::test_open_fileobj - ValueError: unrecognized engine scipy ... =========================== 1 failed, 458 passed, 818 skipped, 18 xfailed, 6 xpassed in 25.08s =========================== ```