code: def set_vertices_and_codes(self, vertices, codes):
      steps, stepsize = np.linspace(
          0.0, 1.0, self.num_lines, False, retstep=True
      )
      steps += stepsize / 2.0
      vertices[0::2, 0] = steps
      vertices[0::2, 1] = 0.0
      vertices[1::2, 0] = steps
      vertices[1::2, 1] = 1.0
      codes[0::2] = Path.MOVETO
      codes[1::2] = Path.LINETO
  
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 2 for calling the VerticalHatch obj's underlying member method code with example usage: obj.set_vertices_and_codes(vertices, codes) without return types