code: def test__float__(parameter):
      """Test the __float__ magic method."""
      par, _ = parameter
      par.set(value=5)
      assert isinstance(float(par), float)
      assert_allclose(float(par), 5.0)
  
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 29 for calling a global function with example usage: test__float__(parameter) without return types