code: def test_values_without_nulls(self):
      self.assertSequenceEqual(
          self.table.columns["one"].values_without_nulls(),
          [Decimal("1"), Decimal("2")],
      )
  
imports: import pickle
  import unittest
  from decimal import Decimal
  from agate import Table
  from agate.data_types import Number, Text
label_desc: Use image node_id 12 for calling the TestColumn obj's underlying member method code with example usage: obj.test_values_without_nulls() without return types