<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:

def _run_done_callbacks(self):
        ''' Run the callbacks and remove the callbacks from the internal
            List so they do not get run again if done is notified more than once.
        '''
        with self._callbacks_lock:
            for callback in self._done_callbacks:
                try:
                    callback()
                # We do not want a callback interrupting the process, especially
                # in the failure cleanups. So log and catch, the excpetion.
                except Exception as ex:
                    logger.error("Exception: %s" % str(ex))
                    logger.error("Exception raised in %s." % callback, exc_info=True)

            self._done_callbacks = []