def PerformDelete(self, where_clause):
    """Deletes results from the database."""
    start_time = time.time()
    delete_statement = ('DELETE FROM %s.%s WHERE %s'
                        % (self._database_name, self._table, where_clause))
    print 'Delete statement: %s' % delete_statement
    if not self._dry_run:
      self._dbh.ExecuteOrDie(delete_statement)
      end_time = time.time()
      delta_time = end_time - start_time
      delay_time = delta_time - delta_time * (100.0 / self._utilization_percent)
      print 'Delay Time: %s' % delay_time
      time.sleep(delay_time)
dataset/ETHPy150Open google/mysql-tools/willie_lib/willie.py/Willie.PerformDelete/swapped operands of `-`