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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 hide_visualization(self):
 """ Hides all visualization geoms and sites. This should be called before rendering to agents """

        for site_name in self.visualization_sites:
            site = self.worldbody.find(".//site[@name='{}']".format(site_name))
            site.set("rgba", "0 0 0 0")
        for geom_name in self.visualization_geoms:
            geom = self.worldbody.find(".//geom[@name='{}']".format(geom_name))
            geom.set("rgba", "0 0 0 0")