Stop Timer in Different Class

[ian]

How can I add code in onStop of LeftPanel to stop the timer created in RightPanel?
Is it possible to stop it from in Frame class? Thanks.

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import wx import wx.html2 as webview   class LeftPanel(wx.Panel):     def __init__(self, parent):         wx.Panel.__init__(self, parent=parent)         stopBtn = wx.Button(self, label="Stop Timer")         stopBtn.Bind(wx.EVT_BUTTON, self.onStop)     def onStop(self,event):         print('Stop Timer') class RightPanel(wx.Panel):     def __init__(self, parent):         wx.Panel.__init__(self, parent=parent)         self.current = "http://wxPython.org"         self.frame = self.GetTopLevelParent()         self.titleBase = self.frame.GetTitle()         sizer = wx.BoxSizer(wx.VERTICAL)         self.wv = webview.WebView.New(self)         sizer.Add(self.wv, 1, wx.EXPAND)         self.SetSizer(sizer)         self.wv.LoadURL(self.current)            self.timer = wx.PyTimer(self.Timer1)         self.timer.Start(3000)     def Timer1(self):         print('3-second timer') class Frame(wx.Frame):     def __init__(self):         wx.Frame.__init__(self, None, title="Stop Timer", size=(500, 300), pos = (500, 300))         splitter = wx.SplitterWindow(self)         leftP = LeftPanel(splitter)         rightP = RightPanel(splitter)         splitter.SplitVertically(leftP, rightP)         splitter.SetMinimumPaneSize(200)         sizer = wx.BoxSizer(wx.VERTICAL)         sizer.Add(splitter, 1, wx.EXPAND)         self.SetSizer(sizer) if __name__ == "__main__":     app = wx.App()     win = Frame()     win.CreateStatusBar()     win.Show()     app.MainLoop()