def _locate_free_sectors(self, ignore_chunk=None):
        """Return a list of booleans, indicating the free sectors."""
        sectors = self._sectors(ignore_chunk=ignore_chunk)
        # Sectors are considered free, if the value is an empty list.
        return [not i for i in sectors]
def _locate_free_sectors ( self , ignore_chunk = None ) : sectors = self . _sectors ( ignore_chunk = ignore_chunk ) return [ not i for i in sectors ]
Return a list of booleans, indicating the free sectors.