code: def test_nan(self):
      assert_(np.isnan(_smirnovp(1, np.nan)))
  
imports: import itertools
  import sys
  import pytest
  import numpy
  from numpy.testing import assert_
  from scipy.special._testutils import FuncData
  from scipy.special import kolmogorov, kolmogi, smirnov, smirnovi
  from scipy.special._ufuncs import _kolmogc, _kolmogci, _kolmogp, _smirnovc, _smirnovci, _smirnovp
label_desc: Use image node_id 1 for calling the TestSmirnovp obj's underlying member method code with example usage: obj.test_nan() without return types