It’s released in 2013, now we can call almost components functions in python script.
http://stevebaer.wordpress.com/2013/12/11/ghpython-node-in-code/

import rhinoscriptsyntax as rs
import Rhino.Geometry as rg
import random
import math
import ghpythonlib.components as ghlcp

objs = []
pts = []
for i in range(20):
    x = random.uniform(0,30)
    y = random.uniform(0,30)
    z = 0
    point = rg.Point3d(x,y,z)
    pts.append(point)

result = ghlcp.DelaunayEdges(pts)
objs.extend(result[1])

result = ghlcp.Voronoi(pt)
objs.extend(result)

a = objs