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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 clear_marking(self):
 """Clear marking from image. This does not clear loaded coordinates from memory."""

        if self.marktag:
            try:
                self.canvas.delete_object_by_tag(self.marktag, redraw=False)
            except Exception:
                pass

        if self.markhltag:
            try:
                self.canvas.delete_object_by_tag(self.markhltag, redraw=False)
            except Exception:
                pass

        self.treeview.clear()  # Clear table too
        self.w.nshown.set_text('0')
        self.fitsimage.redraw()