How to command to AE in Python or Window batch script?

Not really. Of course you can use the usual command line options to pass over commands when launching AE with specific limited options and of course you can always wrap JS as a strings to be evaluated as AE scripts in your Py, but there's no genuine interaction anywhere. Similarly, AE has zero hooks for the Windows Scripting Host/ VB nor does it offer any specific extra batch commands beyond the ones already mentioned, so this is severely limited. That being the case, you should focus your energy on developing native scripts and plug-ins rather than trying to make AE do things the hard way.

Mylenium