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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 __analizar_controles(self, ret):
        "Comprueba y extrae controles si existen en la respuesta XML"
        if 'arrayControles' in ret:
            controles = ret['arrayControles']
            self.Controles = ["%(tipo)s: %(descripcion)s" % ctl['control'] 
                                for ctl in controles]