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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 on_select_mean_fit_box(self, event):
 """ set parent Zeq_GUI to reflect the change in this box then replot the high level means plot @param: event -> the wx.COMBOBOXEVENT that triggered this function """

        new_mean_fit = self.mean_fit_box.GetValue()
        self.parent.mean_fit_box.SetStringSelection(new_mean_fit)
        self.parent.onSelect_mean_fit_box(event)