import rhinoscriptsyntax as rs
import random as ran

# delete everything and start from scratch
allobjs = rs.AllObjects()
rs.DeleteObjects(allobjs)

#Formeln angeben:
bsize = 10              #side lenght of box
dist = 1                #distance between boxes
offs = bsize + dist     #offset of boxes
num = 30               #number of boxes in one row

#create a box
corners = [(0,0,0), (bsize,0,0), (bsize,bsize,0), (0,bsize,0),
          (0,0,bsize), (bsize,0,bsize), (bsize,bsize,bsize), (0,bsize,bsize)]


rs.EnableRedraw(False)

for i in range(num):
    for j in range(num):
        myran = ran.randint(0,5)
        if (myran >= 2):
            box = rs.AddBox(corners)
            rs.MoveObjects(box, (i*offs, j*offs, 0))
            rs.ObjectColor(box, (i*(120/num),j*(110/num),0))