wxAuiNotebook - preventing certain tabs from closing

I'm experimenting with wx.aui.AuiNotebook; is there a way I can prevent particular tabs from being closed? i.e. I have an app that allows the user to create multiple tabs in an AuiNotebook, but the first 2 tabs are system managed and I don't want them to be closed.

Also, in a close event, can I get the window object attached to the tab being closed? (to extract data from it)

From stackoverflow

• I had a similar situation where I wanted to prevent the user from closing the last tab. What I did was binding the wx.aui.EVT_AUINOTEBOOK_PAGE_CLOSE event and then in the event handler check for the number of tabs open. If the number of tabs is less than two I toggle the wx.aui.AUI_NB_CLOSE_ON_ACTIVE_TAB style so that the last tab doesn't have a close button.

  class MyAuiNotebook(wx.aui.AuiNotebook):
  
      def __init__(self, *args, **kwargs):
          kwargs['style'] = kwargs.get('style', wx.aui.AUI_NB_DEFAULT_STYLE) & \
              ~wx.aui.AUI_NB_CLOSE_ON_ACTIVE_TAB
          super(MyAuiNotebook, self).__init__(*args, **kwargs)
          self.Bind(wx.aui.EVT_AUINOTEBOOK_PAGE_CLOSE, self.onClosePage)
  
      def onClosePage(self, event):
          event.Skip()
          if self.GetPageCount() <= 2:
              # Prevent last tab from being closed
              self.ToggleWindowStyle(wx.aui.AUI_NB_CLOSE_ON_ACTIVE_TAB)
  
      def AddPage(self, *args, **kwargs):
          super(MyAuiNotebook, self).AddPage(*args, **kwargs)
          # Allow closing tabs when we have more than one tab:
          if self.GetPageCount() > 1:
              self.SetWindowStyle(self.GetWindowStyleFlag() | \
                  wx.aui.AUI_NB_CLOSE_ON_ACTIVE_TAB)