Batch processing with subtitles

[fhutt]

I have a working batch file and .py configuration file for successful batch processing.
I have used this numerous times and works fine.

I now have some video files I want to transcode but with the addition of .ass subtitle files.
I can create a .py file for this but the subtitle file is coded there and therefore cannot be used in a batch because the subtitle file will only be correct for one video file.

How do I configure a batching system that includes subtitle files?