Booleans with solids

import py2rhino as p2r
print p2r._version

#------------------------------------------------------------------------------ 
floor_height = 3

#------------------------------------------------------------------------------ 
def create_box(floor_num):
    z1 = floor_height * floor_num
    z2 = z1 + 0.5
    
    p1 = (0,0,z1)
    p2 = (30,0,z1)
    p3 = (30,30,z1)
    p4 = (0,30,z1)
    
    p5 = (0,0,z2)
    p6 = (30,0,z2)
    p7 = (30,30,z2)
    p8 = (0,30,z2)
    
    corner_points = (p1,p2,p3,p4,p5,p6,p7,p8)
    return p2r.obj.Box.create(corner_points)
#------------------------------------------------------------------------------ 
sph = p2r.obj.Sphere.create((15,15,15), 12)

boxes = []
for floor_num in range(10):
    box = create_box(floor_num)
    box = sph.func.boolean_intersection(box, False) 
    boxes.append(box)
sph = p2r.obj.Sphere.create((0,0,0), 5)

print sph.func.boolean_difference( box )