代码报错，求大神指点

Question

file_name = input('请输入需要打开的文件名：')f = open(file_name)print('文件的内容是：')for each_line in f:    print(each_line)运行之后出现报错如下：请输入需要打开的文件名：1.txt文件的内容是：Traceback (most recent call last):  File "C:/Users/涤非/Desktop/test2.py", line 4, in <module>    for each_line in f:UnicodeDecodeError: 'gbk' codec can't decode byte 0xff in position 0: illegal multibyte sequence

Answer 1

f = open(filename, encoding="gbk")

Answer 2

编码的问题