Fix Python 3 compatibility of test runner.
Fix Python 3 compatibility of test runner.

spencerlyon2/pygments,spencerlyon2/pygments,spencerlyon2/pygments,spencerlyon2/pygments,spencerlyon2/pygments,spencerlyon2/pygments,spencerlyon2/pygments,spencerlyon2/pygments,spencerlyon2/pygments,spencerlyon2/pygments,spencerlyon2/pygments,spencerlyon2/pygments,spencerlyon2/pygments,spencerlyon2/pygments,spencerlyon2/pygments,spencerlyon2/pygments,spencerlyon2/pygments,spencerlyon2/pygments