Python 3.x 将aiohttp请求与其响应关联
非常简单,我只想将来自Python 3.x 将aiohttp请求与其响应关联,python-3.x,python-requests,python-asyncio,aiohttp,Python 3.x,Python Requests,Python Asyncio,Aiohttp,非常简单,我只想将来自aiohttp异步HTTP请求的响应与标识符(如口述键)关联起来,以便知道哪个响应对应于哪个请求 例如,下面的函数调用以dict值1、2和3为后缀的URI。如何修改它以返回与每个结果关联的键?我只需要能够跟踪哪个请求是哪个请求……对于熟悉asyncio import asyncio import aiohttp items = {'a': '1', 'b': '2', 'c': '3'} def async_requests(items): async def
aiohttp
异步HTTP请求的响应与标识符(如口述键)关联起来,以便知道哪个响应对应于哪个请求
例如,下面的函数调用以dict值1
、2
和3
为后缀的URI。如何修改它以返回与每个结果关联的键?我只需要能够跟踪哪个请求是哪个请求……对于熟悉asyncio
import asyncio
import aiohttp
items = {'a': '1', 'b': '2', 'c': '3'}
def async_requests(items):
async def fetch(item):
url = 'http://jsonplaceholder.typicode.com/posts/'
async with aiohttp.ClientSession() as session:
async with session.get(url + item) as response:
return await response.json()
async def run(loop):
tasks = []
for k, v in items.items():
task = asyncio.ensure_future(fetch(v))
tasks.append(task)
responses = await asyncio.gather(*tasks)
print(responses)
loop = asyncio.get_event_loop()
future = asyncio.ensure_future(run(loop))
loop.run_until_complete(future)
async_requests(items)
输出(缩写):
期望输出(例如):
将键传递给fetch()
,以返回相应的响应:
#!/usr/bin/env python
import asyncio
import aiohttp # $ pip install aiohttp
async def fetch(session, key, item, base_url='http://example.com/posts/'):
async with session.get(base_url + item) as response:
return key, await response.json()
async def main():
d = {'a': '1', 'b': '2', 'c': '3'}
with aiohttp.ClientSession() as session:
####tasks = map(functools.partial(fetch, session), *zip(*d.items()))
tasks = [fetch(session, *item) for item in d.items()]
responses = await asyncio.gather(*tasks)
print(dict(responses))
asyncio.get_event_loop().run_until_complete(main())
谢谢,这正是我想要的。我注意到您在
main()
中打开了ClientSession()
,而不是fetch()
——这只是一个偏好问题吗?@bediabc一个更好的问题,为什么您需要在这里多个会话?@j-f-sebastian谢谢,我明白您的意思。我使用的是以下文章中的模式:@j-f-sebastian嗨,你介意看看这个吗?
{'b': {'id': 2, ...}, 'c': {'id': 3, ...}, 'a': {'id': 1, ...}}
#!/usr/bin/env python
import asyncio
import aiohttp # $ pip install aiohttp
async def fetch(session, key, item, base_url='http://example.com/posts/'):
async with session.get(base_url + item) as response:
return key, await response.json()
async def main():
d = {'a': '1', 'b': '2', 'c': '3'}
with aiohttp.ClientSession() as session:
####tasks = map(functools.partial(fetch, session), *zip(*d.items()))
tasks = [fetch(session, *item) for item in d.items()]
responses = await asyncio.gather(*tasks)
print(dict(responses))
asyncio.get_event_loop().run_until_complete(main())