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=su
# exampleofexecuting a commandasa subprocesswithasyncioimportasyncio # main coroutineasyncdefmain():# start executing a commandina subprocess process=awaitasyncio.create_subprocess_exec('echo','Hello World')# report the detailsofthe subprocessprint(f'subprocess: {process}')# entry point asyncio.run(...
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...
1. subprocess模块 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...
# 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...
# 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 ...
(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, ...
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。
print('Subprocess done sleeping. Return code = %d' % returncode) async def sleep_report(number): for i in range(number + 1): print('Slept for %d seconds' % i) await asyncio.sleep(1) loop = asyncio.get_event_loop() tasks = [ ...
asyncdefmain(): future=asyncio.Future() await future asyncio 的基本用法 1. 运行协程 要运行一个协程,你可以使用asyncio.run()函数。它会创建一个事件循环,并运行指定的协程。 实例 importasyncio asyncdefmain(): print("Start") await asyncio.sleep(1) ...