code: def test_tukey_pvalues():
      # TODO: testcase with 3 is not good because all pairs
      #  has also 3*(3-1)/2=3 elements
      res = tukey_pvalues(3.649, 3, 16)
      assert_almost_equal(0.05, res[0], 3)
      assert_almost_equal(0.05 * np.ones(3), res[1], 3)
  
imports: import numpy
  from numpy.testing import assert_almost_equal
  from statsmodels.sandbox.stats.multicomp import tukey_pvalues
label_desc: Use image node_id 1 for calling a global function with example usage: test_tukey_pvalues() without return types