Posting events across frames

event_props.py

import wx

class FrameOne(wx.Frame):
    
    def __init__(self):
        wx.Frame.__init__(self, None, title='Frame 1')
        
        self.Bind(wx.EVT_CLOSE, self.on_close)
        
    def on_close(self, event):
        print('Closing frame 1')
        self.Destroy()
        
class FrameTwo(wx.Frame):
    
    def __init__(self, other_frame):
        wx.Frame.__init__(self, other_frame, title='Frame 2')
        
        self.Bind(wx.EVT_CLOSE, self.on_close)
        self.other_frame = other_frame
        
    def on_close(self, event):
        print('Closing frame 2')
        self.Destroy()
        wx.PostEvent(self.other_frame, event)
            
        
if __name__ == '__main__':

    app = wx.App()
    frame1 = FrameOne()
    frame2 = FrameTwo(frame1)
    frame1.Show()
    frame2.Show()
    app.MainLoop()