报错代码：
报错内容：
Traceback (most recent call last):
File "F:\python练习\303-1.py", line 5, in <module>
ls = f.readlines()
File "C:\Users\111\AppData\Local\Programs\Python\Python310\lib\codecs.py", line 322, in decode
(result, consumed) = self._buffer_decode(data, self.errors, final)
UnicodeDecodeError: 'utf-8' codec can't decode byte 0xa1 in position 4: invalid start byte
修改，删除第一行的encoding就ok了
