Python 3 preparation: update next() usage for iterators. Tool-assisted patch. Note that various classes in TAL code with next() methods are not actually Python iterators and so are not changed in this patch, but roundup/cgi/ZTUtils/Iterator.py includes the IterIter class which converts between the two styles of iterator.

#!/usr/bin/env python
import sys
import roundup

from roundup.demo import main

sys.exit(main())