Flip Axis on Bones in Blender

import bpy
import mathutils

ob = bpy.context.object
sce = bpy.context.scene

if ob.type == 'ARMATURE':
    armature = ob.data

    pose = sce.objects.active.pose

    for bone in armature.bones:
        if "spine" in bone.name or "neck" in bone.name or "head" in bone.name or "pelvis" in bone.name:
            print(bone.name , " : " , bone.vector.x)

            boneRot = pose.bones[bone.name].rotation_quaternion.to_euler()
            print(pose.bones[bone.name].rotation_quaternion)
            print(boneRot)


            #Comment/Uncomment to select Axis to flip
            #X-Axis
            boneRot[0] *= -1
            #Y-Axis
            boneRot[1] *= -1
            #Z-Axis
            boneRot[2] *= -1
            print(boneRot)
            pose.bones[bone.name].rotation_quaternion = boneRot.to_quaternion()