code: def test_pval(self):
      assert_almost_equal(
          self.res1.pvalue, self.res2.p_value, decimal=13
      )
  
imports: import numpy
  from numpy.testing import assert_almost_equal, assert_equal, assert_
  import pytest
  import statsmodels.stats.weightstats
  from statsmodels.tools.testing import Holder
label_desc: Use image node_id 1 for calling the CheckTostMixin obj's underlying member method code with example usage: obj.test_pval() without return types