code: def lorenz(xyz, *, s=10, r=28, b=2.667):
      """
      Parameters
      ----------
      xyz : array-like, shape (3,)
         Point of interest in three-dimensional space.
      s, r, b : float
         Parameters defining the Lorenz attractor.
  
      Returns
      -------
      xyz_dot : array, shape (3,)
         Values of the Lorenz attractor's partial derivatives at *xyz*.
      """
      x, y, z = xyz
      x_dot = s * (y - x)
      y_dot = r * x - y - x * z
      z_dot = x * y - b * z
      return np.array([x_dot, y_dot, z_dot])
  
label_desc: Use image node_id 1 for calling a global function with example usage: lorenz(xyz) and returns: np