python: edit ISO file directly

Question

1. Is it possible to take an ISO file and edit a file in it directly, i.e. not by unpacking it, changing the file, and repacking it?
2. It is possible to do 1. from

Answer 1

Have you seen Hachoir, a Python library to "view and edit a binary stream field by field"? I haven't had a need to try it myself, but ISO 9660 is listed as a supported parser format.