Python读取txt报错：'cp950' codec can't decode byte 0xb1 in position 5: illegal multibyte sequence

排错过程：
Python读取txt报错：‘cp950’ codec can’t decode byte 0xb1 in position 5: illegal multibyte sequence

for i in files:
	file_path = os.path.join(dirPath, i)
	for line in open(file_path, 'rt'):
		pass

修改代码，读取文件增加encoding='utf-8'参数，报错：‘utf-8’ codec can’t decode byte 0xa4 in position 39: invalid start byte

for i in files:
	file_path = os.path.join(dirPath, i)
	for line in open(file_path, 'rt', encoding='utf-8'):
		pass

根本原因：files中含有excel文件，切记细心！