code: def test_pairplot(self):
      df = self.iris
  
      pg = df.sns.pairplot()
      self._check_axes_shape(
          pg.axes, axes_num=25, layout=(5, 5), figsize=None
      )
      for i in range(5):
          self.assertEqual(pg.axes[i][0].get_ylabel(), df.columns[i])
          self.assertEqual(pg.axes[-1][i].get_xlabel(), df.columns[i])
      tm.close()
  
imports: import pytest
  import matplotlib
  import numpy
  import sklearn.datasets
  import pandas_ml
  import pandas_ml.util.testing
label_desc: Use image node_id 2 for calling the TestSeabornDistribution obj's underlying member method code with example usage: obj.test_pairplot() without return types