def mysql_save():
    try:
        # 获取连接对象
        conn = pymysql.connect(host='127.0.0.1', user='root', password='mysql', database='paimai', port=3306,
                               charset='utf8')
        # 获取执行工具
        cur = conn.cursor()

        sql = """select user,password from user where user={}  and password={}""".format(user_name, password)

        # 执行,返回值。如果是增删改，返回受影响的行数，如果是查询，返回查询的行数
        count = cur.execute(sql)
        print(count, type(count))
        # 关闭
        conn.commit() # 提交
        cur.close()
        conn.close()

        if count == 1:
            print('true')



    except Exception as e:
        print('数据库连接错误\n', e)