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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:

def show_default_popup(self, pos):
        '''show default popup menu'''
        state = self.state
        if state.default_popup.popup is not None:
            wx_menu = state.default_popup.popup.wx_menu()
            state.frame.PopupMenu(wx_menu, pos)