code: def test_parameters_copy(parameters):
      """Tests for copying a Parameters class; all use the __deepcopy__ method."""
      pars, exp_attr_values_A, exp_attr_values_B = parameters
  
      copy_pars = copy(pars)
      pars_copy = pars.copy()
      pars__copy__ = pars.__copy__()
  
      # modifying the original parameters should not modify the copies
      pars["a"].set(value=100)
      pars["b"].user_data["test"] = 456
  
      for copied in [copy_pars, pars_copy, pars__copy__]:
          assert isinstance(copied, lmfit.Parameters)
          assert copied != pars
          assert copied._asteval is not None
          assert copied._asteval.symtable is not None
          assert_parameter_attributes(copied["a"], exp_attr_values_A)
          assert_parameter_attributes(copied["b"], exp_attr_values_B)
  
imports: from copy import copy, deepcopy
  import os
  import pickle
  import numpy
  from numpy.testing import assert_allclose
  import pytest
  import lmfit
  from lmfit.models import VoigtModel
label_desc: Use image node_id 5 for calling a global function with example usage: test_parameters_copy(parameters) without return types