Blender - make ''bpy.context.window.screen = scrn'' work in python script

Solve this: When pasted into the Blender 2.60 python console the following code works perfectly to change from the 'Default' screen to the 'Video Editing'. However, when I input the created blender file 'blender [login to view URL]' the screen stays as the 'Default'. import bpy for scrn in [login to view URL]: if [login to view URL] == 'Video Editing': [login to view URL] = scrn if showPrint: print("scrn: ", scrn) bpy.ops.wm.save_mainfile(filepath="/test/[login to view URL]", check_existing=False)