Looking at /usr/bin/update-manager it uses #! /usr/bin/python but the UpdateManager python code is in /usr/lib/python3/dist-packages. It does run changing the shebang to /usr/bin/python3, though quickly glancing at the changelog I can't tell if the python3 port is complete yet, so may cause other issues.
Looking at /usr/bin/ update- manager it uses #! /usr/bin/python but the UpdateManager python code is in /usr/lib/ python3/ dist-packages. It does run changing the shebang to /usr/bin/python3, though quickly glancing at the changelog I can't tell if the python3 port is complete yet, so may cause other issues.