code: def plot_nodes(self, nodelist, theta, group):
          
          for i, node in enumerate(nodelist):
              r = self.internal_radius + i * self.scale
              x, y = get_cartesian(r, theta)
              circle = plt.Circle(xy=(x, y), radius=self.dot_radius,
                                  color=self.node_colormap[group], linewidth=0)
              self.ax.add_patch(circle)
docs: Plots nodes to screen.