code: def __init__(self, hatch, density):
      self.num_rows = (hatch.count("O")) * density
      Circles.__init__(self, hatch, density)
  
imports: from __future__ import absolute_import, division, print_function, unicode_literals
  import six
  from six.moves import xrange
  import numpy
  from matplotlib.path import Path
label_desc: Use image node_id 1 to create a new LargeCircles object from inherited base classes: Circles with example: obj = LargeCircles(hatch, density)