Python 中 'unicodeescape' codec can't decode bytes in position XXX: trun错误解决方案
2018-01-23 13:46
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背景描述
今天在运用Python pillow模块处理图片时遇到一个错误SyntaxError: (unicode error) 'unicodeescape' codec can't decode bytes in position 2-3: truncated \UXXXXXXXX escape1
刚开始以为是图片名字有中文,不识别,于是在python文件的头部加上
#-*- coding:utf-8 -*-1
但是加完这个还是报错,然后我就把图片的中文去掉还成英文,然后报错,一脸懵逼呀。后来在stackoverflow 上找到了类似的错误,原来是图片路径写的 有问题,错误代码如下
im = Image.open('C:\Users\FrankYuan\Pictures\Camera Roll\WIN_20161010_08_51_57_Pro.jpg')1
正确结果
im = Image.open('C:\\Users\\FrankYuan\\Pictures\\Camera Roll\\WIN_20161010_08_51_57_Pro.jpg')1
或者
im = Image.open(r'C:\Users\FrankYuan\Pictures\Camera Roll\WIN_20161010_08_51_57_Pro.jpg')1
抑或
im = Image.open(r'C:/Users/FrankYuan/Pictures/Camera Roll/WIN_20161010_08_51_57_Pro.jpg')1
原因:
window 读取文件可以用\,但是在字符串中\是被当作转义字符来使用,所以’d:\a.txt’会被转义成’d:\a.txt’这是正确路径,所以不会报错。而‘C:\Users\FrankYuan\Pictures\Camera Roll\WIN_20161010_08_51_57_Pro.jpg ’中经过转义之后可能就找不到路径的资源了,例如\t可能就转义成tab键了。
解决办法
python在描述路径时可以有多种方式,现列举常见的三种方式一:转义的方 4000 式 'd:\\a.txt' 方式二:显式声明字符串不用转义 'd:r\a.txt' 方式三:使用Linux的路径/ 'd:/a.txt'1
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我强烈推荐第三种写法,这在Linux和window下都是行的通的。
u012193440
2018-01-16 10:26回复Dimples_54:windows 路径要使用正斜杠
C:/Users/FrankYuan/Pictures/Camera Roll/WIN_20161010_08_51_57_Pro.jpg
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