create an image caption in blender python part 3

make_caption_part3.py

# Open template .blend
path = os.path.dirname(__file__)
template_path="/"+os.path.join(path,"blends",template+".blend")
if not os.path.exists(template_path):
    print(prog_name + "could not find this template file: '%s'" % template_path)
    sys.exit(1)
bpy.ops.wm.open_mainfile(filepath=template_path)


# Change text
bpy.data.objects["Text"].data.body = text


# Render output image
bpy.context.scene.render.filepath = output
bpy.context.scene.render.resolution_x = 1900
bpy.context.scene.render.resolution_y = 1080
bpy.ops.render.render(write_still=True)