Python - getting values from 'interactive' (top, iftop, ntop etc) command line scenarios?

Question

Have been needing to write some code that recognises (and captures) when there's incoming/outgoing smb transfers on my server. I think the best way is to use popen with 'iftop'. I was thinking I could just use popen to capture the data, but thing is iftop doesn't simply output the data - its an interactive environment that runs continuously until the user exits. So how can I parse values from these kind of programs into python? Alternatively - a better option that popen(iftop) ? Example: foo.Popen("iftop" + someArguments) //this is not stdout, so I can't pull string values (etc) from it :( //how does? JavaScript questions and answers, JavaScript questions pdf, JavaScript question bank, JavaScript questions and answers pdf, mcq on JavaScript pdf, JavaScript questions and solutions, JavaScript mcq Test , Interview JavaScript questions, JavaScript Questions for Interview, JavaScript MCQ (Multiple Choice Questions)

Answer 1

import subprocess, time s = subprocess.Popen("iftop -s -t 1",shell=True,stdout=subprocess.PIPE) while not s.poll() == 0: time.sleep(1) print(s.stdout.read())