Description of problem:

pycdio package (provided only Python 2 package, not Python 3) was recently removed from Fedora. koji-builder (aka kojid) depends on it for " LiveCD, LiveMedia, and Appliance"

From Koji 1.19.1 (which uses Python 3):

[..]
# imports for LiveCD, LiveMedia, and Appliance handler
try:
    import pykickstart.parser as ksparser
    import pykickstart.handlers.control as kscontrol
    import pykickstart.errors as kserrors
    import iso9660 # from pycdio
    image_enabled = True
except ImportError:  # pragma: no cover
    image_enabled = False

[..]

Could there be that we have alternative packages providing the same?

[root@28fc20fb3595 /]# dnf whatprovides '*/iso9660.py'
Last metadata expiration check: 0:18:07 ago on Fri Nov 22 08:16:38 2019.
diffoscope-111-3.fc32.noarch : In-depth comparison of files, archives, and directories
Repo        : rawhide
Matched from:
Filename    : /usr/lib/python3.8/site-packages/diffoscope/comparators/iso9660.py

python3-avocado-69.2-1.module_f32+6755+480b3a4e.noarch : Framework with tools and libraries for Automated Testing
Repo        : rawhide-modular
Matched from:
Filename    : /usr/lib/python3.8/site-packages/avocado/utils/iso9660.py

Version-Release number of selected component (if applicable):

All versions of koji should be affected.

How reproducible:

Setup a koji instance and use affected tasks (e.g. spin-appliance).

Steps to Reproduce:

Actual instructions how to test would be complicated. The minimal test is "import iso9660" on Python 3.

Actual results:

>>> import iso9660
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
ModuleNotFoundError: No module named 'iso9660'

Expected results:

import succeeds.