Looking at bodhi: https://bodhi.fedoraproject.org/updates/?packages=python-twisted
and Koji: http://koji.fedoraproject.org/koji/packageinfo?packageID=3652
It seems python-twisted has never been built for epel7, while in pkgdb (https://admin.fedoraproject.org/pkgdb/package/rpms/python-twisted/) the branch is still approved.
Looking at RHEL:
$ python is_it_in_rhel.py python-twisted
python-twisted is not in RHEL 5
python-twisted is in RHEL 6; version: 8.2.0; arch: noarch
python-twisted is not in RHEL 7
It seems nothing prevents the package from being built.
So is there a technical reason/missing deps preventing python-twisted from being built in epel7?
python-characteristic-14.3.0-5.el7 python-service-identity-14.0.0-5.el7 python-twisted-16.2.0-2.el7 has been submitted as an update to Fedora EPEL 7. https://bodhi.fedoraproject.org/updates/FEDORA-EPEL-2016-25d4dc32e8
python-characteristic-14.3.0-5.el7, python-service-identity-14.0.0-5.el7, python-twisted-16.2.0-2.el7 has been pushed to the Fedora EPEL 7 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-EPEL-2016-25d4dc32e8
This update obsoletes base packages, which is against policy.
$ repoquery --obsoletes python2-twisted | grep -e core -e web -e words
python-twisted-core < 14
python-twisted-core-doc < 14
python-twisted-web < 14
python-twisted-web2 < 14
python-twisted-words < 14
$ python is_it_in_rhel.py python-twisted-core --release 7
python-twisted-core is in RHEL 7; version: 12.2.0; archs: ppc64, ppc64le, x86_64
$ python is_it_in_rhel.py python-twisted-web --release 7
python-twisted-web is in RHEL 7; version: 12.1.0; archs: ppc64, ppc64le, x86_64
$ python is_it_in_rhel.py python-twisted-words --release 7
python-twisted-words is in RHEL 7; version: 12.2.0; archs: ppc64, ppc64le, x86_64
python-twisted-core in RHEL prevents any update on that front.