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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 OnLinkVLCVideo(self, event):
 """VLC video code event handler"""


        key = self.grid.actions.cursor

        if event.videofile:
            try:
                video_volume = \
                    self.grid.code_array.cell_attributes[key]["video_volume"]
            except KeyError:
                video_volume = None

            self.grid.actions.set_attr("panel_cell", True)

            if video_volume is not None:
                code = 'vlcpanel_factory("{}", {})'.format(
                    event.videofile, video_volume)
            else:
                code = 'vlcpanel_factory("{}")'.format(event.videofile)

            self.grid.actions.set_code(key, code)

        else:
            try:
                video_panel = self.grid.grid_renderer.video_cells.pop(key)
                video_panel.player.stop()
                video_panel.player.release()
                video_panel.Destroy()
            except KeyError:
                pass

            self.grid.actions.set_code(key, u"")