Python使用open内置函数读取文件时出现UnicodeDecodeError: ‘gbk‘ codec can‘t decode byte 0x80 in position xx: 解决方案

原代码：

a=open(r"C:\Users\*****\Desktop\one.txt","r")
b=a.read()
print(b)

报错
UnicodeDecodeError Traceback (most recent call last)
in
1 a=open(r"C:\Users****\Desktop\one.txt",“r”)
----> 2 b=a.read()
3 print(b)

UnicodeDecodeError: ‘gbk’ codec can’t decode byte 0x80 in position 21: illegal multibyte sequence

修改：

方案一：按二进制读取文件

a=open(r"C:\Users\*****\Desktop\one.txt","rb")
b=a.read()
print(b)

方案二：设置编码(推荐）

a=open(r"C:\Users\*****\Desktop\one.txt","r",encoding='UTF-8')
b=a.read()
print(b)