code: def test_tklmbda_lmbda1(self, lmbda):
      bound = 1 / lmbda
      assert_equal(sp.tklmbda([-bound, bound], lmbda), [0.0, 1.0])
  
imports: import itertools
  import numpy
  from numpy.testing import assert_equal, assert_allclose
  import pytest
  import scipy.special
  from scipy.special._testutils import MissingModule, check_version, FuncData
  from scipy.special._mptestutils import Arg, IntArg, get_args, mpf2float, assert_mpmath_equal
label_desc: Use image node_id 19 for calling the TestCDFlib obj's underlying member method code with example usage: obj.test_tklmbda_lmbda1(lmbda) without return types