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我正在尝试集成一个进度条来监视在 Python 3.5 中tqdm生成的 POST 请求。aiohttp我有一个工作进度条,但似乎无法使用as_completed(). 感激地收到了指点。

我发现的示例建议使用以下模式,该模式与 Python 3.5async def定义不兼容:

for f in tqdm.tqdm(asyncio.as_completed(tasks), total=len(coros)):
    yield from f

没有进度条的工作(尽管已编辑)异步代码:

def async_classify(records):

    async def fetch(session, name, sequence):
        url = 'https://app.example.com/api/v0/search'
        payload = {'sequence': str(sequence)}
        async with session.post(url, data=payload) as response:
            return name, await response.json()

    async def loop():
        auth = aiohttp.BasicAuth(api_key)
        conn = aiohttp.TCPConnector(limit=100)
        with aiohttp.ClientSession(auth=auth, connector=conn) as session:
            tasks = [fetch(session, record.id, record.seq) for record in records]
            responses = await asyncio.gather(*tasks)    
        return OrderedDict(responses)

这是我修改失败的尝试loop()

async def loop():
    auth = aiohttp.BasicAuth(api_key)
    conn = aiohttp.TCPConnector(limit=100)
    with aiohttp.ClientSession(auth=auth, connector=conn) as session:
        tasks = [fetch(session, record.id, record.seq) for record in records]
        for f in tqdm.tqdm(asyncio.as_completed(tasks), total=len(tasks)):
            await f
        responses = await asyncio.gather(f)
        print(responses)
4

1 回答 1

40

await f返回单个响应。你为什么要传递一个已经完成Future的到asyncio.gather(f)是不清楚的。

尝试:

responses = []
for f in tqdm.tqdm(asyncio.as_completed(tasks), total=len(tasks)):
    responses.append(await f)

Python 3.6 实现了 PEP 530——异步理解

responses = [await f
             for f in tqdm.tqdm(asyncio.as_completed(tasks), total=len(tasks))]

async def现在在函数内部工作。

于 2016-06-18T21:27:51.997 回答