code: def test_repr():
      """Tests for the __repr__ method."""
      par = lmfit.Parameter(name="test", value=10.0, min=0.0, max=20.0)
      assert (
          par.__repr__()
          == "<Parameter 'test', value=10.0, bounds=[0.0:20.0]>"
      )
  
      par = lmfit.Parameter(name="test", value=10.0, vary=False)
      assert (
          par.__repr__()
          == "<Parameter 'test', value=10.0 (fixed), bounds=[-inf:inf]>"
      )
  
      par.set(vary=True)
      par.stderr = 0.1
      assert (
          par.__repr__()
          == "<Parameter 'test', value=10.0 +/- 0.1, bounds=[-inf:inf]>"
      )
  
      par = lmfit.Parameter(name="test", expr="10.0*2.5")
      assert (
          par.__repr__()
          == "<Parameter 'test', value=-inf, bounds=[-inf:inf], expr='10.0*2.5'>"
      )
  
      par = lmfit.Parameter(name="test", brute_step=0.1)
      assert (
          par.__repr__()
          == "<Parameter 'test', value=-inf, bounds=[-inf:inf], brute_step=0.1>"
      )
  
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 19 for calling a global function with example usage: test_repr() without return types