Sorry for this late reply, I see that that python-trezor-0.7.8-2.fc25 is stuck in testing.
I do not know why I am not able to push it to stable.
https://bodhi.fedoraproject.org/updates/FEDORA-2017-84c14a7e2c
Can you enable testing and try to see if it works with python-trezor-0.7.8-2.fc25?
Jonny