def _dispatch(self):
        try:
            self._callable(*self._args, **self._kw)
        finally:
            self._finished()
iterate over psl formatted infile and return
dataset/ETHPy150Open enthought/pyface/pyface/ui/qt4/gui.py/_FutureCall._dispatch--crossover with--dataset/ETHPy150Open CGATOxford/cgat/obsolete/BlatTest.py/iterator_target_overlap