render multiple scenes in single .blend file

render_scenes.py

import bpy
 
for scene in bpy.data.scenes:
	print('rendering: ' + scene.name)
 
	bpy.context.screen.scene = scene
 
	scene.render.filepath = '//render/' + scene.name + '/' + scene.name
	scene.render.resolution_percentage = 100
	scene.render.image_settings.file_format = 'H264'
	scene.render.image_settings.color_mode = 'RGB'
	scene.render.ffmpeg.format = 'MPEG4'
	scene.render.ffmpeg.video_bitrate = 8000
	scene.render.ffmpeg.minrate = 6000
	scene.render.ffmpeg.maxrate = 10000
	scene.render.ffmpeg.audio_codec = 'AAC'
	scene.render.ffmpeg.audio_bitrate = 128
 
	bpy.ops.render.render(animation=True)
 
	print('finished')