code: def test_eq(self):
      x1 = provider.ScalarDatum(step=12, wall_time=0.25, value=1.25)
      x2 = provider.ScalarDatum(step=12, wall_time=0.25, value=1.25)
      x3 = provider.ScalarDatum(step=23, wall_time=3.25, value=-0.5)
      self.assertEqual(x1, x2)
      self.assertNotEqual(x1, x3)
      self.assertNotEqual(x1, object())
  
imports: import numpy
  from tensorboard import test
  from tensorboard.data import provider
label_desc: Use image node_id 2 for calling the ScalarDatumTest obj's underlying member method code with example usage: obj.test_eq() without return types