Python中的文件路径以字符串的形式出现错误 [英] File paths in Python in the form of string throw errors

问题描述

我需要在Python中以Python的形式放置很多文件路径，作为我的程序的一部分。例如我的目录之一是 D：\ful_automate\dl 。但是Python会将某些字符识别为其他字符，并引发错误。在该示例中，错误是 IOError：[Errno 22]无效模式（'wb'）或filename：'D：\x0cul_automate\\\dl 。这对我来说很多，每次我需要将目录名称更改为可能没有问题的目录名称。

解决方案

\ 字符用于形成字符转义; \f 具有特殊含义。

使用 / 或者使用原始字符串 r'。或者，您可以确保Python以反斜杠的形式读取反斜杠，并使用额外的 \ 转义。

  r'D：\ful_automate\dl'
'D：\\ful_automate\\\dl'
'D：/ ful_automate / dl' 
  

演示以显示差异：

 >>> 'D：\ful_automate\dl'
'D：\x0cul_automate\\\d1'
>>> r'D：\ful_automate\dl'
'D：\\ful_automate\\dl'
  

I need to put a lot of filepaths in the form of strings in Python as part of my program. For example one of my directories is D:\ful_automate\dl. But Python recognizes some of the characters together as other characters and throws an error. In the example the error is IOError: [Errno 22] invalid mode ('wb') or filename: 'D:\x0cul_automate\\dl. It happens a lot for me and every time I need to change the directory name to one that may not be problematic.

解决方案

The \ character is used to form character escapes; \f has special meaning.

Use / or use raw string r'' instead. Alternatively, you could ensure that Python reads the backslash as a backslash by escaping it with an additional \.

r'D:\ful_automate\dl'
'D:\\ful_automate\\dl'
'D:/ful_automate/dl'

Demo to show the difference:

>>> 'D:\ful_automate\dl'
'D:\x0cul_automate\\dl'
>>> r'D:\ful_automate\dl'
'D:\\ful_automate\\dl'

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