text: import numpy as np
  from graphbutler import recipe, Graph, save_all
  
  @recipe
  def sine_wave():
      g = Graph()
      g.x = np.arange(0.0, 10.0, 0.01)
      g.y = np.sin(g.x)
      return g
  
  if __name__ == '__main__':
      sine_wave().show()
  