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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 draw(self):
 """Draws all the figures in this instance"""

        for fig in set(chain(*map(
                lambda arr: arr.psy.plotter.figs2draw, self.with_plotter))):
            self.logger.debug("Drawing figure %s", fig.number)
            fig.canvas.draw()
        for arr in self:
            if arr.psy.plotter is not None:
                arr.psy.plotter._figs2draw.clear()
        self.logger.debug("Done drawing.")