如何在python中执行别名解析

Question

我想将别名拆分为diff数组，这是我正在使用的代码

def parse_sql_columns_alias(self, sql):
    columns = []
    parsed = sqlparse.parse(sql)
    stmt = parsed[0]
    for token in stmt.tokens:
        if isinstance(token, IdentifierList):
            for identifier in token.get_identifiers():
                columns.append(str(identifier))
        if isinstance(token, Identifier):
            columns.append(str(token))
        if token.ttype is Keyword:  # from
            break
    return columns 

得到下面的输出

['empid as eid', 'empname as ename']

想要输出

[eid, ename]