<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def create_report(self, uri, timeout=-1):
 """ Creates a report and returns the output. Args: uri: URI timeout: Timeout in seconds. Wait for task completion by default. The timeout does not abort the operation in OneView; it just stops waiting for its completion. Returns: list: """

        logger.debug('Creating Report (uri = %s)'.format(uri))
        task, _ = self._connection.post(uri, {})

        if not task:
            raise exceptions.HPOneViewException(RESOURCE_CLIENT_TASK_EXPECTED)

        task = self._task_monitor.get_completed_task(task, timeout)

        return task['taskOutput']