code: def test_update_np_partial(self):
      tbl = Table(
          {"a": [1, 2, 3, 4], "b": ["a", "b", "c", "d"]}, index="b"
      )
  
      tbl.update(
          {
              "a": np.array([5, 6, 7, 8]),
              "b": np.array(["a", "b", "c", "d"], dtype=object),
          }
      )
  
      assert tbl.view().to_dict() == {
          "a": [5, 6, 7, 8],
          "b": ["a", "b", "c", "d"],
      }
  
imports: import numpy
  from datetime import date, datetime
  from pytest import mark
  from perspective.table import Table
label_desc: Use image node_id 10 for calling the TestUpdateNumpy obj's underlying member method code with example usage: obj.test_update_np_partial() without return types