Description of problem:
You can't build python-txrequests for epel7 any more because it has build requirement for python-requets >= 1.2.0 which was on koji when package was build. But that package got removed because there is older version of python-requets in rhel7.
Please fix package to work with python-requests = 1.1.0-8.el7 or remove the broken package from epel7.
Sorry, reported against wrong epel version.
After some local testing, it looks like that the version pinning on requests-1.2.0 is unnecessary. Everything works fine in a virtualenv with requests-1.1.0.
python-txrequests-0.9.2-3.el7 has been submitted as an update for Fedora EPEL 7.
python-txrequests-0.9.2-3.el7 has been pushed to the Fedora EPEL 7 stable repository. If problems still persist, please make note of it in this bug report.