PROSAGA码农传奇-其他科技-如何在Python中的特定条件下从输出列表中取出第一列？

如何运行 sudo arp-scan 然后将输出转换成数组如 [‘1’, ‘2’, …] ： import subprocess import sys import pandas as pd def run_process(exe): proc = subprocess.Popen(exe, stdout=subprocess.PIPE, stderr=subprocess.STDOUT) while True: return_code = proc.poll() char = proc.stdout.read(1)
<pre><code> if return_code is not None and len(char) == 0:
 break
 yield char.decode('utf-8')
</code></pre>text = ’’ for char in run_process(‘sudo arp-scan –interface=wlan0 –localnet| awk “{print $1}”|tail -n +3|head -n -2’.split()): sys.stdout.write(char) text += char子进程的输出：arp-scan: unrecognized option ‘–localnet|’ Usage: arp-scan [options] [hosts…]Target hosts must be specified on the command line unless the –file option is given, in which case the targets are read from the specified file instead, or the –localnet option is used, in which case the targets are generated from the network interface IP address and netmask.You will need to be root, or arp-scan must be SUID root, in order to run arp-scan, because the functions that it uses to read and write packets require root privilege.The target hosts can be specified as IP addresses or hostnames. You can also specify the target as IPnetwork/bits (e.g. 192.168.1.0/24) to specify all hosts in the given network (network and broadcast addresses included), or IPstart-IPend (e.g. 192.168.1.3-192.168.1.27) to specify all hosts in the inclusive range, or IPnetwork:NetMask (e.g. 192.168.1.0:255.255.255.0) to specify all hosts in the given network and mask.These different options for specifying target hosts may be used both on the command line, and also in the file specified with the –file option.use “arp-scan –help” for detailed information on the available options.Report bugs or send suggestions at <a href="https://github.com/royhills/arp-scan">https://github.com/royhills/arp-scan</a> See the arp-scan homepage at <a href="https://github.com/royhills/arp-scan">https://github.com/royhills/arp-scan</a>当我只使用 sudo arp-scan –interface=wlan0 –localnet 时它可以工作，但我需要输出与下面的完全相同：os.sytem 的源代码及其输出： import os import pandas as pd import numpy as np import time as time import subprocess import sys while True: all_function = os.system(“sudo arp-scan –interface=wlan0 –localnet| awk ‘{print $1}’|tail -n +3|head -n -2”) time.sleep(5) 它的输出：192.168.50.150 192.168.50.194