asyncio.Queue是一个并发安全的异步队列,它可以用于在协程之间安全地传递数据。 代码语言:javascript 代码运行次数:0 运行 AI代码解释 pythonCopy codeimport asyncioasyncdefproducer(queue):foriinrange(5):awaitasyncio.sleep(1)awaitqueue.put(i)print(f"Produced: {i}")asyncdefconsumer(queue):whileTrue:item=...
首先async def 关键字定义了这是个异步函数,await 关键字加在需要等待的操作前面,response.read()等待request响应,是个耗IO操作。然后使用ClientSession类发起http请求。 多链接异步访问 如果我们需要请求多个URL该怎么办呢,同步的做法访问多个URL只需要加个for循环就可以了。但异步的实现方式并没那么容易,在之前的基础...
asyncdefrun(n): queue = asyncio.Queue() # schedule the consumer consumer = asyncio.ensure_future(consume(queue)) # run the producer and wait for completion await produce(queue, n) # wait until the consumer has processed all items await queue.join() # the consumer is still awaiting for a...
import asyncio from asyncio import Queue import random import string q = Queue(maxsize=100) async def add(): while 1: await q.put(random.choice(string.ascii_letters)) async def desc(): while 1: res = await q.get() print(res) await asyncio.sleep(1) if __name__ == '__main__'...
再切回来继续执行 # put往队列放内容,get切回来继续执行拿数据,put/get两者的协调执行由调度器的ready队列保证 item = await q.get() print('Consuming', item) except QueueClosed: print('Consumer done') q = AsyncQueue() sched.new_task(producer(q, 10)) sched.new_task(consumer(q)) sched.run(...
import aiohttp # 异步HTTP客户端库 async def fetch_async(url): async with aiohttp.ClientSession() as session: async with session.get(url) as response: return await response.text() async def main(): html_content = await fetch_async('http://example.com') print(html_content) # 使用asyncio...
# 假设get_http_response是异步HTTP请求函数returnresponse.text()asyncdefprocess_urls(urls):tasks=[fetch_data(url)forurlinurls]results=awaitasyncio.gather(*tasks)forresultinresults:print(result)# 启动事件循环loop=asyncio.get_event_loop()try:loop.run_until_complete(process_urls(["http://example.com...
async def fetch(url): async with aiohttp.ClientSession() as session: async with session.get(url) as response: return await response.text() async def main(): www.hfwenxin.com/L8mXdV/ urls = ['https://example.com', 'https://example.org'] ...
async_function(callback_3) async_function(callback_2) async_function(callback_1) 破坏代码结构 写同步代码时,关联的操作时自上而下运行: Python 1 2 do_a() do_b() 如果b 处理依赖于 a 处理的结果,而 a 过程是异步调用,就不知 a 何时能返回值,需要将后续的处理过程以callback的方式传递给 a ,...
Azure Storage Queue client library for Python Samples Code Sample 04/28/2025 9 contributors Browse code These are code samples that show common scenario operations with the Azure Storage Queue client library. The async versions of the samples (the python sample files appended with _async) show...