How to uninstall it ?

[thinkycx]

After I install keystone-engine , python setup.py install and keystone folder will be installed in /usr/local/lib/python2.7/site-packages/. When I run import keystone in python shell ,it cannot get the dylib.

So I rm -rf /usr/local/lib/python2.7/site-packages/keystone.
Bug when I run pip ,it still exists:

And I cannot reinstall it also.

Do you known how to fix it ?Thank you .