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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 cursor_blink_mode_changed(self, settings, key, user_data):
 """Called when cursor blink mode settings has been changed """

        for term in self.guake.notebook_manager.iter_terminals():
            term.set_property("cursor-blink-mode", settings.get_int(key))