code: def parameter():
      """Initialize parameter for tests."""
      param = lmfit.Parameter(
          name="a",
          value=10.0,
          vary=True,
          min=-100.0,
          max=100.0,
          expr=None,
          brute_step=5.0,
          user_data=1,
      )
      expected_attribute_values = (
          "a",
          10.0,
          True,
          -100.0,
          100.0,
          None,
          5.0,
          1,
      )
      assert_parameter_attributes(param, expected_attribute_values)
      return param, expected_attribute_values
  
imports: from math import trunc
  import pickle
  import numpy
  from numpy.testing import assert_allclose
  import pytest
  import lmfit
label_desc: Use image node_id 2 for calling a global function with example usage: parameter() and returns: param,  expected_attribute_values