The python3-tosca-parser RPM requires both Python 2 and Python 3. Except in very special circumstances, there is no need for one package to drag in both Python stacks. Usually, this is a packaging error: for example, a stray "/usr/bin/python" shebang in a Python 3 package can introduce a Python 2 dependency. Please split your package, or remove the stray dependencies. There is a section on shebangs in the Python RPM Porting Guide [0] which covers this issue. It's ok to do this in Rawhide only, however, it would be greatly appreciated if you could push it to Fedora 25 as well. If anything is unclear, or if you need any kind of assistance, you can ask on IRC (#fedora-python on Freenode), or reply here. We'll be happy to help investigating or fixing this issue! [0] http://python-rpm-porting.readthedocs.io/en/latest/application-modules.html#are-shebangs-dragging-you-down-to-python-2
python-tosca-parser-0.6.0-3.fc25 has been submitted as an update to Fedora 25. https://bodhi.fedoraproject.org/updates/FEDORA-2016-1335aa6f0c
python-tosca-parser-0.6.0-3.fc25 has been pushed to the Fedora 25 testing repository. If problems still persist, please make note of it in this bug report. See https://fedoraproject.org/wiki/QA:Updates_Testing for instructions on how to install test updates. You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2016-1335aa6f0c
python-tosca-parser-0.6.0-3.fc25 has been pushed to the Fedora 25 stable repository. If problems still persist, please make note of it in this bug report.