duplicate the mesh in edit mode and flip normals using python script I want to make my two sided (input model is collada). so, for that i want to duplicate all the faces in edit mode and then flip normals, and then export the model as fbx. i want to do this using python script.

my command to run the python script is 

blender --background --python MeshDuplicate.py


Below is the .py file i am calling:

import bpy
import sys

object = bpy.ops.wm.collada_import(filepath="H:\\models\\armour.dae")
bpy.ops.object.mode_set(mode = 'EDIT')
bpy.ops.mesh.select_all(action='SELECT')
dup_object = bpy.data.objects.get("object")
object_d = dup_object.copy()
object_d.data = object.data.copy()
scene = bpy.context.scene
scene.objects.link(dup_object)
scene.update()  
bpy.ops.export_scene.fbx(filepath="H:\\models\\armour.fbx", axis_forward='-Z', axis_up='Y')


i am getting this error.

Read new prefs: C:\Users\Lee\AppData\Roaming\Blender Foundation\Blender\2.76\config\userpref.blend
AL lib: (EE) UpdateDeviceParams: Failed to set 44100hz, got 96000hz instead
found bundled python: C:\Program Files\Blender Foundation\Blender\2.76\python
Writing node id='node', name='node'
Traceback (most recent call last):
  File "", line 2, in 
  File "C:\Program Files\Blender Foundation\Blender\MeshDuplicate_Flip.py", line 11, in 
    object_d = dup_object.copy()
AttributeError: 'NoneType' object has no attribute 'copy'
Then you get this error 

'NoneType' object has no attribute 'copy'


This means, that you try to get attribute from object 'NoneType'. NoneType is nothing.  So you want to get something from none. Why dup_object is None? You will get 'NoneType' when try to get object, that doesn't exists. I guess there is no object with name ""object"". Why name is "object"? - check this.