python - wxPython handling SIGTERM / SIGINT -

i have wxpython app. want respond sigterm , sigint if "close" button had been clicked. however, when bind signals using signal.signal(signal.sigterm, exit_handler), executed after event sent main app graphically (clicking on button, opening menu, etc.). how can avoid , execute handles event caught?

relevant parts of code:

class myframe(wx.frame):     def __init__(self, parent, title):         # ...         self.bind(wx.evt_close, self.signal_handler)         signal.signal(signal.sigterm, self.signal_handler)         signal.signal(signal.sigint, self.signal_handler)  # ...  app = wx.app(redirect=false, clearsigint=false) frame = myframe(none, "hello world") app.mainloop() 

this happens if signal calls moved outside function , executed before wx calls.

one way of doing it, add 'timer' fake event.

import wx import signal, os  def signalusr1_handler(sig,frame):     print "signal caught"  class exampleframe(wx.frame):     def __init__(self, parent):         wx.frame.__init__(self, parent)         pid_no = str(os.getpid())         panel = wx.panel(self)         self.quote1 = wx.statictext(panel, label="test signal timer", pos=(20, 30))         self.quote2 = wx.statictext(panel, label="send process usr1 signal", pos=(20, 50))         self.quote3 = wx.statictext(panel, label="kill -s usr1 "+pid_no, pos=(20, 70))         self.button = wx.button(panel, -1, "click", pos=(20,90))         self.button.bind(wx.evt_button, self.onpress)         self.timer = wx.timer(self)         self.bind(wx.evt_timer, self.ontimer, self.timer)         self.timer.start(1000)         self.show()     def onpress(self, event):         print "button pressed"     def ontimer(self, event):         return app = wx.app() exampleframe(none) signal.signal(signal.sigusr1,signalusr1_handler) app.mainloop()