Description of problem: ipykernel has a declared dependency on jupyter-client on PyPI but it's missing from the Fedora spec file. It's causing the test suite of ipython (5.3.0) to fail. Version-Release number of selected component (if applicable): 4.5.2-4
This is fixed with python-ipykernel-4.5.2-5.fc26. Really should have a dep on ipython >= 4.0 as well, but since we don't have that version yet, I've left the version part off for now.