code: def test_custom_datum__input():
      cd = CustomDatum(
          ellipsoid=Ellipsoid.from_epsg(7001),
          prime_meridian=PrimeMeridian.from_name("Lisbon"),
      )
      assert cd.ellipsoid.name == "Airy 1830"
      assert cd.prime_meridian.name == "Lisbon"
  
file_path: pyproj/test/crs/test_crs_datum.py
imports: from numpy.testing import assert_almost_equal
  from pyproj.crs.datum import CustomDatum, CustomEllipsoid, CustomPrimeMeridian, Ellipsoid, PrimeMeridian
label_desc: Use image node_id 2 for calling a global function with example usage: test_custom_datum__input() without return types