python - Blender, convert .stl to .obj with prompt commande -

i want convert .stl file .obj, without using blender interface.

to that, want in 2 step :

1 stl blend

2 blend obj

actually blend obj work ok python code :

import bpy import sys   argv = sys.argv argv = argv[argv.index("--") + 1:] # args after "--"  obj_out = argv[0]  bpy.ops.export_scene.obj(filepath=obj_out, axis_forward='-z', axis_up='y') 

and batch :

@echo off  rem put path of blender folder set path=c:\program files\blender foundation\blender  set filename=guitar.blend set target=guitar.obj rem launch blender %filename% --background --python convert_blend_to_obj.py -- %target%   pause 

this work perfectly.

the problem stl blend, not working python code :

import bpy import sys  argv = sys.argv argv = argv[argv.index("--") + 1:] # args after "--"  blend_out = argv[0]  bpy.ops.import_mesh.stl(filepath=blend_out, axis_forward='-z', axis_up='y') 

and batch associated :

@echo off  rem put path of blender folder set path=c:\program files\blender foundation\blender  set filename=turbine.stl  set target=turbine.blend  rem launch blender %filename% --background --python convert_stl_to_blend.py -- %target%   pause 

i got error : file format not supported in file c:..\turbine.stl blender quit

i think problem in python code, don't know change.

i found first script here : https://wiki.blender.org/index.php/extensions:2.6/py/scripts/import-export/wavefront_obj

i thank in advance help, maybe there better way that. don't want have launch blender , manually. need prompt commande.

i got error : file format not supported in file c:..\turbine.stl blender quit

the error getting means blender trying read first command argument .blend file. put script's arguments after "--" (as says in script's comment), , should work.

made changes script import stl , export obj in 1 step, test if works:

import bpy import sys  argv = sys.argv argv = argv[argv.index("--") + 1:] # args after "--"  stl_in = argv[0] obj_out = argv[1]  bpy.ops.import_mesh.stl(filepath=stl_in, axis_forward='-z', axis_up='y') bpy.ops.export_scene.obj(filepath=obj_out, axis_forward='-z', axis_up='y') 

and launched follows:

blender --background --python convert_stl_to_blend.py -- test.stl test.obj