code: def __init__(self, hatch, density):
      self.num_rows = (hatch.count(".")) * density
      super().__init__(hatch, density)
  
imports: import numpy
  from matplotlib import _api
  from matplotlib.path import Path
label_desc: Use image node_id 1 to create a new SmallFilledCircles object from inherited base classes: Circles with example: obj = SmallFilledCircles(hatch, density)