import Blender
import bpy
from Blender import *

def main():
	oArm = bpy.data.objects["Armature"]
	ar = oArm.getData()

	ar.makeEditable()
	for bn in ar.bones.values():
		bn.options.append(Armature.NO_DEFORM)
		bn.name = "Changed4"
		print bn.options

	ar.update()
	Window.RedrawAll()

main()

import bpy

def main():
    ar = bpy.data.armatures["Armature"]

    for bn in ar.edit_bones:
        bn.deform = True
        print (bn.name)
    
main()