As noted in comments 9 and 10 in https://bugs.launchpad.net/ubuntu/+source/python-pylxd/+bug/1754657, python-pylxd is missing a run-time Depends on python-requests-toolbelt. Currently this affects Bionic and Cosmic. The Artful point release being provided via the above referenced bug is also affected.
As noted in comments 9 and 10 in https:/ /bugs.launchpad .net/ubuntu/ +source/ python- pylxd/+ bug/1754657, python-pylxd is missing a run-time Depends on python- requests- toolbelt. Currently this affects Bionic and Cosmic. The Artful point release being provided via the above referenced bug is also affected.