srujana_1

helpMenu = wx.Menu()
        i = helpMenu.Append(-1, _("Online documentation..."))
        self.Bind(wx.EVT_MENU, lambda e: webbrowser.open_new("C:\Users\hello\Desktop\filename.pdf"), i)

Hello, i use the above code for opening pdf file , but it's not opening, instead it's opening a webbrowser , can anyone suggest