파이선에서 서브프로세스를 실행시키고 출력되는 결과를 가져오는 방법입니다.

예제는 wireshark 를 실행시켜 tcp 패킷을 캡쳐할때마다 그 출력을 파이선으로 가지고 오는 코드입니다.

#!/usr/bin/env python

import subprocess
from time import sleep

def run_command(command):
    p = subprocess.Popen(command,
                         stdout=subprocess.PIPE,
                         stderr=subprocess.PIPE,
                         shell=True)
    # Read stdout from subprocess until the buffer is empty !
    for line in iter(p.stdout.readline, b''):
        if line: # Don't print blank lines
            yield line
    # This ensures the process has completed, AND sets the 'returncode' attr
    while p.poll() is None:                                                                                                
        sleep(.1) #Don't waste CPU-cycles
    # Empty STDERR buffer
    err = p.stderr.read()
    if p.returncode != 0:
       # The run_command() function is responsible for logging STDERR 
       print("Error: " + str(err))


for line in run_command('tshark -nni en0 -Y tcp'):
        print(line)

참고자료: https://stackoverflow.com/questions/4760215/running-shell-command-from-python-and-capturing-the-output/23187248

건투를 빕니다!