/usr/ is in python-billiard 3.3.0.15-1ubuntu1.
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/usr/lib/
/usr/lib/python2.7/
/usr/lib/python2.7/dist-packages/
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/usr/share/
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/usr/share/doc/python-billiard/
/usr/share/doc/python-billiard/copyright
/usr/share/doc/python-billiard/README.rst
/usr/share/doc/python-billiard/changelog.Debian.gz