You probably wanted 0.3.3-1~ubuntu0.18.04.1 as the version here because now the version in bionic-updates is higher then the on in focal (same for xenial):
https://packages.ubuntu.com/search?suite=all&searchon=names&keywords=python3-s3transfer -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1880999 Title: SRU: bump version to make compatible with upstream awscli requirements To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/python-s3transfer/+bug/1880999/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs