copr: some python3 migration

to continue I need python3-urlgrabber which is not done yet.
See: https://bugzilla.redhat.com/show_bug.cgi?id=985288
copr: C: 33, 0: No space allowed before :
copr: W: 23, 0: Unused import gettext (unused-import)
copr: C:139, 0: Unnecessary parens after 'print' keyword (superfluous-parens)