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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 update(self, cache):
 """ Update self cache from other. """

        self.cache['delims'] = cache.get('delims')
        self.cache['opts'].update(cache.get('opts'))
        self.cache['rset'].update(cache.get('rset'))
        self.cache['mix'].update(cache.get('mix'))
        map(self.set_var, cache['ctx'].values())