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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 match_member_id(self, member_conf, current_member_confs):
 """ Attempts to find an id for member_conf where fom current members confs there exists a element. Returns the id of an element of current confs WHERE member_conf.host and element.host are EQUAL or map to same host """

        if current_member_confs is None:
            return None

        for curr_mem_conf in current_member_confs:
            if is_same_address(member_conf['host'], curr_mem_conf['host']):
                return curr_mem_conf['_id']

        return None