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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:

def on_task_done(self, task):
        '''Called when a task is done and success, called by `on_task_status`'''
        task['status'] = self.taskdb.SUCCESS
        task['lastcrawltime'] = time.time()

        if 'schedule' in task:
            if task['schedule'].get('auto_recrawl') and 'age' in task['schedule']:
                task['status'] = self.taskdb.ACTIVE
                next_exetime = task['schedule'].get('age')
                task['schedule']['exetime'] = time.time() + next_exetime
                self.put_task(task)
            else:
                del task['schedule']
        self.update_task(task)

        project = task['project']
        self._cnt['5m'].event((project, 'success'), +1)
        self._cnt['1h'].event((project, 'success'), +1)
        self._cnt['1d'].event((project, 'success'), +1)
        self._cnt['all'].event((project, 'success'), +1).event((project, 'pending'), -1)
        logger.info('task done %(project)s:%(taskid)s %(url)s', task)
        return task