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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 DbGetAliasAttribute(self, argin):
 """ Get the attribute name from the given alias. If the given alias is not found in database, returns an empty string :param argin: The attribute alias :type: tango.DevString :return: The attribute name (dev_name/att_name) :rtype: tango.DevString """

        self._log.debug("In DbGetAliasAttribute()")
        alias_name = argin[0]
        return self.db.get_alias_attribute(alias_name)