ping for indefinite amount of time and get its output in Python

Question

The task is: Try to send ping in python using the most basic form like \"ping 8.8.8.8\". After some time terminate the ping command (In a terminal, one will do Ctrl+C) and g

Answer 1

ping will block in your code as soon as it fills its stdout OS pipe buffer (~65K on my system). You need to read the output:

#!/usr/bin/env python
import signal
from subprocess import Popen, PIPE
from threading import Timer

child = Popen(['ping', '8.8.8.8'], stdin=PIPE, stdout=PIPE, stderr=PIPE)
Timer(5, child.send_signal, [signal.SIGINT]).start() # Ctrl+C in 5 seconds
out, err = child.communicate() # get output
print(out.decode())
print('*'*60)
print(err.decode())