code: def test_update_np_datetime_str(self):
      tbl = Table({"a": [np.datetime64(datetime(2019, 7, 11, 11, 0))]})
  
      tbl.update({"a": np.array(["2019/7/12 11:00:00"])})
  
      assert tbl.view().to_dict() == {
          "a": [
              datetime(2019, 7, 11, 11, 0),
              datetime(2019, 7, 12, 11, 0),
          ]
      }
  
imports: import numpy
  from datetime import date, datetime
  from pytest import mark
  from perspective.table import Table
label_desc: Use image node_id 7 for calling the TestUpdateNumpy obj's underlying member method code with example usage: obj.test_update_np_datetime_str() without return types