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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, drawDC=None):
 """ Render the figure using RendererWx instance renderer, or using a previously defined renderer if none is specified. """

        DEBUG_MSG("draw()", 1, self)
        self.renderer = RendererWx(self.bitmap, self.figure.dpi)
        self.figure.draw(self.renderer)
        self._isDrawn = True
        self.gui_repaint(drawDC=drawDC)