/usr/ is in python3-traitlets 4.3.2-1.
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/usr/lib/
/usr/lib/python3/
/usr/lib/python3/dist-packages/
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/usr/share/
/usr/share/doc/
/usr/share/doc/python3-traitlets/
/usr/share/doc/python3-traitlets/changelog.Debian.gz
/usr/share/doc/python3-traitlets/copyright