Py3k: css `futurize -0 -w .`
Py3k: css.contrib `futurize -0 -w .`
Py3k: passing all css tests on 27 and 33
Py3k: css, closing open file pointers
Py3k: datamark `futurize -0 -w .`
Py3k: passing all datamark tests on 27 and 33
Py3k: datamark, closing open file pointers