code: def test_parameters_pretty_print(parameters, capsys):
      """Test the pretty_print method."""
      pars, _, _ = parameters
  
      # oneliner
      pars.pretty_print(oneline=True)
      captured = capsys.readouterr()
      oneliner = (
          "Parameters([('a', <Parameter 'a', value=10.0, "
          "bounds=[-100.0:100.0], brute_step=5.0>), ('b', <Parameter "
          "'b', value=20.0, bounds=[-250.0:250.0], expr='2.0*a', "
          "brute_step=25.0>)])"
      )
      assert oneliner in captured.out
  
      # default
      pars.pretty_print()
      captured = capsys.readouterr()
      captured_split = captured.out.split("\n")
      assert len(captured_split) == 4
      header = (
          "Name     Value      Min      Max   Stderr     Vary     "
          "Expr Brute_Step"
      )
      assert captured_split[0] == header
  
      # specify columnwidth
      pars.pretty_print(colwidth=12)
      captured = capsys.readouterr()
      captured_split = captured.out.split("\n")
      header = (
          "Name         Value          Min          Max       Stderr     "
          "    Vary         Expr   Brute_Step"
      )
      assert captured_split[0] == header
  
      # specify columns
      pars["a"].stderr = 0.01
      pars.pretty_print(columns=["value", "min", "max", "stderr"])
      captured = capsys.readouterr()
      captured_split = captured.out.split("\n")
      assert (
          captured_split[0]
          == "Name     Value      Min      Max   Stderr"
      )
      assert (
          captured_split[1] == "a        10     -100      100     0.01"
      )
      assert (
          captured_split[2] == "b        20     -250      250     None"
      )
  
      # specify fmt
      pars.pretty_print(fmt="e", columns=["value", "min", "max"])
      captured = capsys.readouterr()
      captured_split = captured.out.split("\n")
      assert captured_split[0] == "Name     Value      Min      Max"
      assert captured_split[1] == "a  1.0000e+01 -1.0000e+02 1.0000e+02"
      assert captured_split[2] == "b  2.0000e+01 -2.5000e+02 2.5000e+02"
  
      # specify precision
      pars.pretty_print(
          precision=2, fmt="e", columns=["value", "min", "max"]
      )
      captured = capsys.readouterr()
      captured_split = captured.out.split("\n")
      assert captured_split[0] == "Name     Value      Min      Max"
      assert captured_split[1] == "a  1.00e+01 -1.00e+02 1.00e+02"
      assert captured_split[2] == "b  2.00e+01 -2.50e+02 2.50e+02"
  
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 19 for calling a global function with example usage: test_parameters_pretty_print(parameters, capsys) without return types