code: def setup_method(self):
      try:
          import matplotlib.pyplot  # noqa
      except ImportError:
          import nose
  
          # matplotlib.use doesn't work on Travis
          # PYTHON=3.4 PANDAS=0.17.1 SKLEARN=0.16.1
          raise nose.SkipTest()
  
      self.iris = pdml.ModelFrame(datasets.load_iris())
  
      self.diabetes = pdml.ModelFrame(datasets.load_diabetes())
      # convert columns to str
      self.diabetes.columns = [
          "col{0}".format(c) if isinstance(c, int) else c
          for c in self.diabetes.columns
      ]
  
imports: import pytest
  import matplotlib
  import numpy
  import sklearn.datasets
  import pandas_ml
  import pandas_ml.util.testing
label_desc: Use image node_id 1 for calling the SeabornCase obj's underlying member method code with example usage: obj.setup_method() without return types