mysql如何将txt文件插入对应的按顺序的某列中（修改下列代码）

import pymysql
# 按行读取txt文本文档
with open('price.txt', 'r', encoding='utf-8') as f:
    datas = f.readlines()
# 连接数据库
con = pymysql.connect(
    host='localhost',
    user='root',
    password='123456',
    database='mydatebase3',
    port=3306,
    charset='utf8',
    cursorclass=pymysql.cursors.DictCursor
)
cur = con.cursor()
# 编写插入数据的sql
sql = 'insert into taobao(price) values(%s)'
try:
    # 执行sql
    cur.executemany(sql,datas)
    # 提交事务
    con.commit()
    print('插入成功')
except Exception as e:
    print(e)
    con.rollback()
    print('插入失败')
finally:
    con.close()