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

PyCdlib can read and edit ISO-9660 files, as well as Joliet, Rock Ridge, UDF, and El Torito extensions. It has a bunch of detailed examples in its documentation, including one showing how to edit a file in-place. At the time of writing, it cannot add or remove files, or edit directories. However, it is still actively maintained, in contrast to the libraries linked in older answers.