Python 的 pathlib 获取父级的相对路径 [英] Python's pathlib get parent's relative path

问题描述

考虑以下Path:

导入路径库path = pathlib.Path(r'C:\users\user1\documents\importantdocuments')

如何从 Path 中提取准确的字符串 documents\importantdocuments?

我知道这个例子看起来很傻，这里的实际上下文是将本地文件转换为远程下载链接.

解决方案

使用 PurePath.relative_to() 方法生成相对路径.

您不太清楚基本路径是如何确定的；这里有两个选项:

secondparent = path.parent.parenthomedir = pathlib.Path(r'C:\users\user1')

然后只需在 path.relative_to(secondparent) 或 path.relative_to(homedir) 结果上使用 str().

演示:

<预><代码>>>>导入路径库>>>path = pathlib.Path(r'C:\users\user1\documents\importantdocuments')>>>secondparent = path.parent.parent>>>homedir = pathlib.Path(r'C:\users\user1')>>>str(path.relative_to(secondparent))'文件\\重要文件'>>>str(path.relative_to(homedir))'文件\\重要文件'

Consider the following Path:

import pathlib
path = pathlib.Path(r'C:\users\user1\documents\importantdocuments')

How can I extract the exact string documents\importantdocuments from that Path?

I know this example looks silly, the real context here is translating a local file to a remote download link.

解决方案

Use the PurePath.relative_to() method to produce a relative path.

You weren't very clear as to how the base path is determined; here are two options:

secondparent = path.parent.parent
homedir = pathlib.Path(r'C:\users\user1')

then just use str() on the path.relative_to(secondparent) or path.relative_to(homedir) result.

Demo:

>>> import pathlib
>>> path = pathlib.Path(r'C:\users\user1\documents\importantdocuments')
>>> secondparent = path.parent.parent
>>> homedir = pathlib.Path(r'C:\users\user1')
>>> str(path.relative_to(secondparent))
'documents\\importantdocuments'
>>> str(path.relative_to(homedir))
'documents\\importantdocuments'

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