Python讀取log文件報錯「UnicodeDecodeError」

問題描述：

寫了一個讀取log文件的Python腳本：

# -*- coding:utf-8 -*-
import os
import numpy as np
file = 'D:\pythonfile\test.log'

for line in open("test.log","r"):
    print(line)

可是在執行時報錯：
執行代碼報錯：

Traceback (most recent call last):
  File "D:/pythonfile/my-test225.py", line 8, in <module>
    for line in open("test.log","r"):
UnicodeDecodeError: 'gbk' codec can't decode byte 0x80 in position 6946: illegal multibyte sequence

Process finished with exit code 1

報錯如圖：

問題緣由：

這是由於日誌編碼格式和讀取日誌的解碼格式不一致致使的

問題解決：

方法一，讀取文件指定「encoding='UTF-8'：

# -*- coding:utf-8 -*-
import os
import numpy as np
file = 'D:\pythonfile\test.log'

for line in open("test.log","r",encoding='UTF-8'):
    print(line)

方法二，讀取文件指定rb（rb 以二進制讀模式打開）：

# -*- coding:utf-8 -*-
import os
import numpy as np
file = 'D:\pythonfile\test.log'

# for line in open("test.log","rb"):
    print(line)