class_docstr: Helper class for comparing sframe and sarrays
  
  Adapted from test_sframe.py
code: def _assert_sgraph_equal(self, sg1, sg2):
      self._assert_sframe_equal(sg1.vertices, sg2.vertices)
      self._assert_sframe_equal(sg1.edges, sg2.edges)
  
imports: from __future__ import print_function
  from __future__ import division
  from __future__ import absolute_import
  import random
  import tempfile
  import shutil
  import math
  import string
  import numpy
  from pandas.util.testing import assert_frame_equal
  from ..None import SArray
  import turicreate
  import sys
  from six import StringIO
  import pytest
label_desc: Use image node_id 1 for calling the SFrameComparer obj's underlying member method code with example usage: obj._assert_sgraph_equal(sg1, sg2) without return types