importsubprocessimportasyncioasyncdefrun_command(command):"""异步执行外部命令"""process=awaitasyncio.create_subprocess_shell(command,stdout=subprocess.PIPE,stderr=subprocess.PIPE)stdout,stderr=awaitprocess.communicate()ifstdout:print(f'[{command}] stdout:{stdout.decode()}')ifstderr:print(f'[{command...
我们将创建一个异步函数,以非阻塞的方式运行一个简单的 shell 命令。 importasyncioimportsubprocessasyncdefrun_command(command):"""运行给定的命令并返回输出"""# 创建一个子进程来执行命令process=awaitasyncio.create_subprocess_shell(command,stdout=subprocess.PIPE,stderr=subprocess.PIPE)# 等待命令执行完成并获取...
1. 10秒钟测试ip段所有IP的连通性 (base) [root@wlt-overseas-middleware-master ~]#cat su-asyncio-re-cancel.pyimportasyncioimporttimeimportre#call shell cmd and get exec return codeasyncdefrun(cmd): proc=await asyncio.subprocess.create_subprocess_shell( cmd, stdout=asyncio.subprocess.PIPE, stderr...
import subprocess def async_call(file_path): p = subprocess.Popen(["python", file_path]) # 这里会被阻塞,等待子进程结束 p.communicate() if __name__ == '__main__': # 异步调用另一个python文件 async_call("another_file.py"): 2. multiprocessing模块 from multiprocessing import Process def...
我们可以通过 create_subprocess_exec() 函数从 asyncio 程序执行命令。 asyncio.create_subprocess_exec() 函数接受一个命令并直接执行它。 这很有用,因为它允许命令在子进程中执行,并允许 asyncio 协程读取、写入和等待它。 与asyncio.create_subprocess_shell() 函数不同,asyncio.create_subprocess_exec() 不会使用...
# example of executing a command as a subprocess with asyncio import asyncio # main coroutine async def main(): # start executing a command in a subprocess process = await asyncio.create_subprocess_exec('echo', 'Hello World') # report the details of the subprocess ...
# SuperFastPython.com# example of executing a command as a subprocess with asyncioimportasyncio# main coroutineasyncdefmain():# start executing a command in a subprocessprocess =awaitasyncio.create_subprocess_exec('echo','Hello World')# report the details of the subprocessprint(f'subprocess:{proce...
coroutine asyncio.create_subprocess_exec() coroutine asyncio.create_subprocess_shell() (5)队列 asyncio 队列的设计类似于标准模块queue的类。虽然asyncio队列不是线程安全的,但它们被设计为专门用于 async/await 代码。需要注意的是,asyncio队列的方法没有超时参数,使用 asyncio.wait_for()函数进行超时的队列操作。
It is possible to start anasyncioevent loop in a subprocess started viamultiprocessing: importasynciofrommultiprocessingimportProcess@asyncio.coroutinedefcoro():print("hi")defworker():loop=asyncio.get_event_loop()loop.run_until_complete(coro())if__name__=="__main__":p=Process(target=worker)p...
print r >>> framework(logic) [FX] logic: mylogic [FX] do something 78 async:mylogic 尽管 framework 变得复杂了⼀一些,但却保持了 logic 的完整性.blocking style 样式的编码给逻 辑维护带来的好处⽆无需⾔言说. 5.4 宝藏 标准库 itertools 模块是不应该忽视的宝藏. chain 连接多个迭代器. >>>...