Hello. python-matplotlib included non-free image. Please debian bug number "854280" details. https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=854280 Thanks.
This bug appears to have been reported against 'rawhide' during the Fedora 26 development cycle. Changing version to '26'.
python-matplotlib-2.0.0-2.fc26.2 has been submitted as an update to Fedora 26. https://bodhi.fedoraproject.org/updates/FEDORA-2017-4732cdfecb
python-matplotlib-2.0.0-2.fc26.2 has been pushed to the Fedora 26 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-2017-4732cdfecb
python-matplotlib-2.0.0-2.fc26.2 has been pushed to the Fedora 26 stable repository. If problems still persist, please make note of it in this bug report.