code: def test_get_weights(self):
      agent = TestAgent(self.alg)
      params = agent.get_weights()
      expected_params = list(agent.alg.model.named_parameters())
      self.assertEqual(len(params), len(expected_params))
      for i, key in enumerate(params):
          self.assertLess(
              (params[key].sum() - expected_params[i][1].numpy().sum()),
              1e-5,
          )
  
imports: import numpy
  import unittest
  import paddle
  import paddle.nn
  import parl
  import os
label_desc: Use image node_id 9 for calling the AgentBaseTest obj's underlying member method code with example usage: obj.test_get_weights() without return types