python打开utf-8编码的 *.csv文件多了一段没有的字母：\ufeffq，是什么情况？

import csv
filename='123.csv'
with open(filename) as f:
    reader=csv.reader(f)
    header_row = next(reader)
    print(header_row)

filename1='jj.csv'
with open(filename1,encoding = "utf-8") as f1:   #encoding = "utf-8" ,因为jj.csv用 utf-8编码的
    reader=csv.reader(f1)
    header_row = next(reader)
    print(header_row)

请问，有没有解决方法？
没有就只能不用utf-8编码了；
utf-8编码到底有什么用

改一下编码就行，把 UTF-8 编码 改成 UTF-8-sig

import csv
filename='123.csv'
with open(filename) as f:
    reader=csv.reader(f)
    header_row = next(reader)
    print(header_row)
 
filename1='jj.csv'
with open(filename1,encoding = "utf-8-sig") as f1:   #encoding = "utf-8" ,因为jj.csv用 utf-8编码的
    reader=csv.reader(f1)
    header_row = next(reader)
    print(header_row)

在读取文件中出现\ufeff，解决 \ufeff的问题 - BruceLong - 博客园 语言：python 编程工具：pycharm 硬件环境：win10 64位 读取文件过程中发现一个问题：已有记事本文件（非空），转码 UTF-8，复制到pycharm中，在开始位置打印结果会出现 \u https://www.cnblogs.com/yunlongaimeng/p/12530255.html