如何引用“\"登录python字符串 [英] How to refer to "\" sign in python string

问题描述

我在引用字符串中的特殊符号时遇到问题:

我有:path='C:\dir\dir1\dir2\filename.doc'

我想要文件名.

当我尝试:filename=path[path.rfind("\"):-4]

然后解释器说这是从\"开始的错误行，因为被视为注释.

解决方案

可以使用"\\"，技术上最好使用os.path.sep> 如果您坚持使用反斜杠.但更好的是，在您的路径中使用 /，它在 Windows 上运行良好

Python 具有内置函数来操作路径.请注意，如果您仍然喜欢反斜杠而不是正斜杠，则需要将反斜杠加倍

<预><代码>>>>导入操作系统>>>path='C:\\dir\\dir1\\dir2\\filename.doc'>>>os.path.splitext(os.path.basename(path))('文件名', '.doc')

并使用正斜杠

<预><代码>>>>path='C:/dir/dir1/dir2/filename.doc'>>>os.path.splitext(os.path.basename(path))('文件名', '.doc')

I have problem with refering to special symbol in string:

I have: path='C:\dir\dir1\dir2\filename.doc'

and I want filename.

When I try: filename=path[path.rfind("\"):-4]

then interpreter says it's an error line right from "\" since is treated as a comment.

解决方案

You can use "\\", technically it would be better to use os.path.sep if you insist on using backslashes. But better yet, use / in your paths, it works fine on Windows

Python has builtin functions to manipulate paths. Note that you need to double the backslashes if you still prefer them to forwardslashes

>>> import os
>>> path='C:\\dir\\dir1\\dir2\\filename.doc'
>>> os.path.splitext(os.path.basename(path))
('filename', '.doc')

and using forwardslashes

>>> path='C:/dir/dir1/dir2/filename.doc'
>>> os.path.splitext(os.path.basename(path))
('filename', '.doc')

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