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Well, those errors are more deeper than I thought...

I had experiences with this (most because of Open CV old version installed with Kinetic). My solution was to uninstall ROS, everything from python and then reinstall it. I recommend to uninstall ROS following this:

sudo apt-get purge '^ros-*'
sudo apt-get autoremove

and then installing again (after python 2.7)

Try this and tell me later, best regards