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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 run(self, fig):
 """ Run the exporter on the given figure Parmeters --------- fig : matplotlib.Figure instance The figure to export """

        # Calling savefig executes the draw() command, putting elements
        # in the correct place.
        fig.savefig(io.BytesIO(), format='png', dpi=fig.dpi)
        if self.close_mpl:
            import matplotlib.pyplot as plt
            plt.close(fig)
        self.crawl_fig(fig)