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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 setExpertLevel(self):
 """ Modifies widget according to expertise level, which in this case is just matter of hiding or revealing the button to set CCD temps """

        g = get_root(self).globals
        level = g.cpars['expert_level']
        if level == 0:
            if self.val.get() == 'CCD TECs':
                self.val.set('Observe')
                self._changed()
            self.tecs.grid_forget()
        else:
            self.tecs.grid(row=0, column=3, sticky=tk.W)