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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 close(self):
 """Close the plot and release its memory. """

        from matplotlib.pyplot import close
        for ax in self.axes[::-1]:
            # avoid matplotlib/matplotlib#9970
            ax.set_xscale('linear')
            ax.set_yscale('linear')
            # clear the axes
            ax.cla()
        # close the figure
        close(self)