from subprocess import Popen, PIPE, TimeoutExpired
import sys


# inside class body
def ping(pingcount, hostname):

    cmd = ["ping", "-c", pingcount,  hostname]

    proc = Popen(cmd, stdout=PIPE, stderr=PIPE)

    try:
        proc_stdout, proc_stderr = proc.communicate(timeout=10)
    except TimeoutExpired:
        proc.kill()             # on Linux send SIGKILL signal
        return "No connection to terminal. Contact system administrator."

    print(str(proc_stdout))

    if str(proc_stdout).find("rtt") != -1:
        return str(proc_stdout)[str(proc_stdout).find("rtt"):]
    else:
        return "No connection to server."