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Segmentation fault (core dumped)
------------------
(program exited with code: 139)
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#!/usr/bin/python
#-*- coding: UTF-8 -*-
import os, ipaddr, wx
if os.name == 'nt': import subprocess
from time import sleep
class TextFrame(wx.Frame):
    def __init__(self):
        wx.Frame.__init__(self, None, -1, size=(80, 200),
            style=(wx.DEFAULT_FRAME_STYLE ^ (wx.RESIZE_BORDER | wx.MINIMIZE_BOX | wx.MAXIMIZE_BOX | wx.SIMPLE_BORDER)))
        panel = wx.Panel(self, -1, style=wx.NO_BORDER)
        panel.SetBackgroundColour(wx.BLACK)
        panel.SetForegroundColour(wx.GREEN)
        my_text = ''
        for item in online:
            my_text = my_text + item + '\n'
        basicLabel = wx.StaticText(panel, -1, my_text)
        self.timer = wx.Timer(self)
        self.Bind(wx.EVT_TIMER, self.OnTimer, self.timer)
        self.timer.Start(10000)
     
    def OnTimer(self, evt):
        self.Close(True)
def StartGui():
    app = wx.PySimpleApp()
    frame = TextFrame()
    frame.Show()
    app.MainLoop()
my_net = ipaddr.IPv4Network('192.168.1.0/28')
my_ip = '192.168.1.2'
buf = []
while True:
    online = []
    for cur_ip in my_net.iterhosts():
        cur_ip = str(cur_ip)
        if my_ip != cur_ip:
            if os.name == 'nt':
                ping = subprocess.Popen(["ping", '-n', '1', cur_ip], stdout = subprocess.PIPE,
                                                                                    stderr = subprocess.PIPE)
                ans, error = ping.communicate()
                if 'TTL=' in ans: online.append(cur_ip)
            else:
                p = os.popen('ping -c 1 ' + cur_ip)
                ans = p.read()
                p.close()
                if 'ttl=' in ans: online.append(cur_ip)
    a = [new_ip for new_ip in online if new_ip not in buf]
    buf = online
    if a: StartGui()