Removing ubuntu-gnome-desktop (0.58.3) ...
Removing gnome-tweak-tool (3.18.1-1) ...
  File "/usr/bin/pyclean", line 63
    except (IOError, OSError), e:
                             ^
SyntaxError: invalid syntax
dpkg: error processing package gnome-tweak-tool (--remove):
 subprocess installed pre-removal script returned error exit status 1