python3 清除asyncio队列 方法

import asyncio
 
q=asyncio.Queue()
for i in range(5):
    q.put_nowait(i)
q.get_nowait()
 
loop=asyncio.get_event_loop()
 
#this will raise an error if q cannot join
loop.run_until_complete(asyncio.wait_for(q.join(),1))
 
 
# ================== 方法1
q._queue.clear()
q._finished.set()
q._unfinished_tasks = 0
 
 
# ================== 方法2
for _ in range(q.qsize()):
    q.get_nowait()
for _ in range(q._unfinished_tasks):
    q.task_done()
 
 
# ================== 方法3
del q
q=asyncio.Queue()