把这个代码,import subprocess import ipaddress network = ipaddress.ip_network('192.168.25.0/24') for host in network.hosts(): ip = str(host) # 使用ping命令检测IP是否可达 result = subprocess.run(['ping', '-n', '1', '-w', '1', ip], stdout=subprocess.PIPE, stderr=subprocess.PIPE) if result.returncode == 0: print(ip, 'is up!'),修改为异步的
时间: 2023-11-30 15:05:07 浏览: 96
对Python subprocess.Popen子进程管道阻塞详解
好的,以下是使用异步方式实现的代码:
```python
import asyncio
import subprocess
import ipaddress
async def ping_ip(ip):
# 使用ping命令检测IP是否可达
result = await asyncio.create_subprocess_exec(
'ping', '-n', '1', '-w', '1', ip,
stdout=subprocess.PIPE, stderr=subprocess.PIPE
)
await result.communicate()
return ip, result.returncode
async def main():
network = ipaddress.ip_network('192.168.25.0/24')
tasks = []
for host in network.hosts():
ip = str(host)
tasks.append(asyncio.ensure_future(ping_ip(ip)))
results = await asyncio.gather(*tasks)
for ip, returncode in results:
if returncode == 0:
print(ip, 'is up!')
if __name__ == '__main__':
loop = asyncio.get_event_loop()
loop.run_until_complete(main())
```
在这个实现中,我们使用了 `asyncio.create_subprocess_exec()` 函数来执行 ping 命令的子进程,并使用 `asyncio.gather()` 函数等待所有子进程的执行结果。这样可以实现异步执行,提高程序效率。
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