Preparing to unpack .../python-lockfile_1%3a0.8-2ubuntu2_all.deb ...
/var/lib/dpkg/info/python-lockfile.prerm: 6: /var/lib/dpkg/info/python-lockfile.prerm: pyclean: not found
dpkg: warning: subprocess old pre-removal script returned error exit status 127
dpkg: trying script from the new package instead ...
/var/lib/dpkg/tmp.ci/prerm: 6: /var/lib/dpkg/tmp.ci/prerm: pyclean: not found
dpkg: error processing archive /var/cache/apt/archives/python-lockfile_1%3a0.8-2ubuntu2_all.deb (--unpack):
 subprocess new pre-removal script returned error exit status 127