How to use the pyproj.Transformer.from_pipeline function in pyproj

def test_4d_itransform():
    transformer = Transformer.from_pipeline("+init=ITRF2008:ITRF2000")
    assert_almost_equal(
        list(
            transformer.itransform(
                [(3513638.19380, 778956.45250, 5248216.46900, 2008.75)]
            )
        ),
        [(3513638.1999428216, 778956.4532640711, 5248216.453456361, 2008.75)],
    )

def test_4d_transform__inverse():
    transformer = Transformer.from_pipeline("+init=ITRF2008:ITRF2000")
    assert_almost_equal(
        transformer.transform(
            xx=3513638.1999428216,
            yy=778956.4532640711,
            zz=5248216.453456361,
            tt=2008.75,
            direction=TransformDirection.INVERSE,
        ),
        (3513638.19380, 778956.45250, 5248216.46900, 2008.75),
    )

def test_4d_itransform():
    transformer = Transformer.from_pipeline("+init=ITRF2008:ITRF2000")
    assert_almost_equal(
        list(
            transformer.itransform(
                [(3513638.19380, 778956.45250, 5248216.46900, 2008.75)]
            )
        ),
        [(3513638.1999428216, 778956.4532640711, 5248216.453456361, 2008.75)],
    )

def test_from_pipeline__non_transform_input():
    with pytest.raises(ProjError, match="Input is not a transformation"):
        Transformer.from_pipeline("epsg:4326")

def test_3d_time_itransform():
    transformer = Transformer.from_pipeline("+init=ITRF2008:ITRF2000")
    assert_almost_equal(
        list(
            transformer.itransform(
                [(3513638.19380, 778956.45250, 2008.75)], time_3rd=True
            )
        ),
        [(3513638.1999428216, 778956.4532640711, 2008.75)],
    )

def test_4d_transform():
    transformer = Transformer.from_pipeline("+init=ITRF2008:ITRF2000")
    assert_almost_equal(
        transformer.transform(
            xx=3513638.19380, yy=778956.45250, zz=5248216.46900, tt=2008.75
        ),
        (3513638.1999428216, 778956.4532640711, 5248216.453456361, 2008.75),
    )

def test_3d_time_itransform():
    transformer = Transformer.from_pipeline("+init=ITRF2008:ITRF2000")
    assert_almost_equal(
        list(
            transformer.itransform(
                [(3513638.19380, 778956.45250, 2008.75)], time_3rd=True
            )
        ),
        [(3513638.1999428216, 778956.4532640711, 2008.75)],
    )

def test_4d_transform():
    transformer = Transformer.from_pipeline("+init=ITRF2008:ITRF2000")
    assert_almost_equal(
        transformer.transform(
            xx=3513638.19380, yy=778956.45250, zz=5248216.46900, tt=2008.75
        ),
        (3513638.1999428216, 778956.4532640711, 5248216.453456361, 2008.75),
    )

def test_2d_with_time_transform():
    transformer = Transformer.from_pipeline("+init=ITRF2008:ITRF2000")
    assert_almost_equal(
        transformer.transform(xx=3513638.19380, yy=778956.45250, tt=2008.75),
        (3513638.1999428216, 778956.4532640711, 2008.75),
    )

def test_equivalent_pipeline():
    transformer = Transformer.from_pipeline(
        "+proj=pipeline +step +proj=longlat +ellps=WGS84 +step "
        "+proj=unitconvert +xy_in=rad +xy_out=deg"
    )
    assert not transformer._transformer.skip_equivalent
    assert not transformer._transformer.projections_equivalent
    assert not transformer._transformer.projections_exact_same