code: def test_l2_repr(self):
      l2_repr = repr(algorithms.l2(0.01, exclude=["bias"]))
      self.assertEqual(l2_repr, "l2(0.01, exclude=['bias'])")
  
      l2_repr = repr(algorithms.l2(decay_rate=0.01, exclude=["bias"]))
      self.assertEqual(l2_repr, "l2(decay_rate=0.01, exclude=['bias'])")
  
file_path: neupy/tests/algorithms/test_regularizers.py
imports: import numpy
  from neupy import algorithms, layers
  from base import BaseTestCase
  from helpers import simple_classification
label_desc: Use image node_id 3 for calling the L2RegularizationTestCase obj's underlying member method code with example usage: obj.test_l2_repr() without return types