如何在Python中只获取路径的最后一部分?

发布于 2024-09-27 06:56:12 字数 230 浏览 3 评论 0原文

中,假设我有这样的路径:

/folderA/folderB/folderC/folderD/

如何只获取 folderD 部分?

In , suppose I have a path like this:

/folderA/folderB/folderC/folderD/

How can I get just the folderD part?

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评论(10

蘑菇王子 2024-10-04 06:56:12

使用 os.path.normpath 去掉任何结尾的斜杠,然后 os. path.basename 为您提供路径的最后一部分:

>>> os.path.basename(os.path.normpath('/folderA/folderB/folderC/folderD/'))
'folderD'

仅使用 basename 提供最后一个斜杠之后的所有内容,在本例中为 ''

Use os.path.normpath to strip off any trailing slashes, then os.path.basename gives you the last part of the path:

>>> os.path.basename(os.path.normpath('/folderA/folderB/folderC/folderD/'))
'folderD'

Using only basename gives everything after the last slash, which in this case is ''.

温柔嚣张 2024-10-04 06:56:12

对于 python 3,您可以使用 pathlib 模块(例如 pathlib.PurePath) :

>>> import pathlib

>>> path = pathlib.PurePath('/folderA/folderB/folderC/folderD/')
>>> path.name
'folderD'

如果您想要文件所在的最后一个文件夹名称:

>>> path = pathlib.PurePath('/folderA/folderB/folderC/folderD/file.py')
>>> path.parent.name
'folderD'

With python 3 you can use the pathlib module (pathlib.PurePath for example):

>>> import pathlib

>>> path = pathlib.PurePath('/folderA/folderB/folderC/folderD/')
>>> path.name
'folderD'

If you want the last folder name where a file is located:

>>> path = pathlib.PurePath('/folderA/folderB/folderC/folderD/file.py')
>>> path.parent.name
'folderD'
丿*梦醉红颜 2024-10-04 06:56:12

您可以执行

>>> import os
>>> os.path.basename('/folderA/folderB/folderC/folderD')

UPDATE1:如果您将其指定为/folderA/folderB/folderC/folderD/xx.py,则此方法有效。这给出了 xx.py 作为基本名称。我猜这不是你想要的。所以你可以这样做 -

>>> import os
>>> path = "/folderA/folderB/folderC/folderD"
>>> if os.path.isdir(path):
        dirname = os.path.basename(path)

UPDATE2: 正如 lars 指出的那样,进行更改以适应尾随的“/”。

>>> from os.path import normpath, basename
>>> basename(normpath('/folderA/folderB/folderC/folderD/'))
'folderD'

You could do

>>> import os
>>> os.path.basename('/folderA/folderB/folderC/folderD')

UPDATE1: This approach works in case you give it /folderA/folderB/folderC/folderD/xx.py. This gives xx.py as the basename. Which is not what you want I guess. So you could do this -

>>> import os
>>> path = "/folderA/folderB/folderC/folderD"
>>> if os.path.isdir(path):
        dirname = os.path.basename(path)

UPDATE2: As lars pointed out, making changes so as to accomodate trailing '/'.

>>> from os.path import normpath, basename
>>> basename(normpath('/folderA/folderB/folderC/folderD/'))
'folderD'
夜唯美灬不弃 2024-10-04 06:56:12

这是我的方法:

>>> import os
>>> print os.path.basename(
        os.path.dirname('/folderA/folderB/folderC/folderD/test.py'))
folderD
>>> print os.path.basename(
        os.path.dirname('/folderA/folderB/folderC/folderD/'))
folderD
>>> print os.path.basename(
        os.path.dirname('/folderA/folderB/folderC/folderD'))
folderC

Here is my approach:

>>> import os
>>> print os.path.basename(
        os.path.dirname('/folderA/folderB/folderC/folderD/test.py'))
folderD
>>> print os.path.basename(
        os.path.dirname('/folderA/folderB/folderC/folderD/'))
folderD
>>> print os.path.basename(
        os.path.dirname('/folderA/folderB/folderC/folderD'))
folderC
饭团 2024-10-04 06:56:12

我正在寻找一种解决方案来获取文件所在的最后一个文件夹名称,我只是使用了两次 split 来获取正确的部分。这不是问题,但谷歌把我转到这里了。

pathname = "/folderA/folderB/folderC/folderD/filename.py"
head, tail = os.path.split(os.path.split(pathname)[0])
print(head + "   "  + tail)

I was searching for a solution to get the last foldername where the file is located, I just used split two times, to get the right part. It's not the question but google transfered me here.

pathname = "/folderA/folderB/folderC/folderD/filename.py"
head, tail = os.path.split(os.path.split(pathname)[0])
print(head + "   "  + tail)
不奢求什么 2024-10-04 06:56:12

如果您使用本机 python 包 pathlib ,这非常简单。

>>> from pathlib import Path
>>> your_path = Path("/folderA/folderB/folderC/folderD/")
>>> your_path.stem
'folderD'

假设您有folderD 中某个文件的路径。

>>> from pathlib import Path
>>> your_path = Path("/folderA/folderB/folderC/folderD/file.txt")
>>> your_path.name
'file.txt'
>>> your_path.parent.name
'folderD'

If you use the native python package pathlib it's really simple.

>>> from pathlib import Path
>>> your_path = Path("/folderA/folderB/folderC/folderD/")
>>> your_path.stem
'folderD'

Suppose you have the path to a file in folderD.

>>> from pathlib import Path
>>> your_path = Path("/folderA/folderB/folderC/folderD/file.txt")
>>> your_path.name
'file.txt'
>>> your_path.parent.name
'folderD'
素年丶 2024-10-04 06:56:12

我喜欢 Path 的 parts 方法:

grandparent_directory, parent_directory, filename = Path(export_filename).parts[-3:]
log.info(f'{t: <30}: {num_rows: >7} Rows exported to {grandparent_directory}/{parent_directory}/{filename}')

I like the parts method of Path for this:

grandparent_directory, parent_directory, filename = Path(export_filename).parts[-3:]
log.info(f'{t: <30}: {num_rows: >7} Rows exported to {grandparent_directory}/{parent_directory}/{filename}')
梦初启 2024-10-04 06:56:12

在我当前的项目中,我经常将路径的后部传递给函数,因此使用 Path 模块。为了以相反的顺序获取第 n 部分,我使用:

from typing import Union
from pathlib import Path

def get_single_subpath_part(base_dir: Union[Path, str], n:int) -> str:
    if n ==0:
        return Path(base_dir).name
    for _ in range(n):
        base_dir = Path(base_dir).parent
    return getattr(base_dir, "name")

path= "/folderA/folderB/folderC/folderD/"

# for getting the last part:
print(get_single_subpath_part(path, 0))
# yields "folderD"

# for the second last
print(get_single_subpath_part(path, 1))
#yields "folderC"

此外,为了以包含剩余路径的路径的相反顺序传递第 n 部分,我使用:

from typing import Union
from pathlib import Path

def get_n_last_subparts_path(base_dir: Union[Path, str], n:int) -> Path:
    return Path(*Path(base_dir).parts[-n-1:])

path= "/folderA/folderB/folderC/folderD/"

# for getting the last part:
print(get_n_last_subparts_path(path, 0))
# yields a `Path` object of "folderD"

# for second last and last part together 
print(get_n_last_subparts_path(path, 1))
# yields a `Path` object of "folderc/folderD"

请注意,此函数返回一个 Path< /code> 可以轻松转换为字符串的对象(例如 str(path)

During my current projects, I'm often passing rear parts of a path to a function and therefore use the Path module. To get the n-th part in reverse order, I'm using:

from typing import Union
from pathlib import Path

def get_single_subpath_part(base_dir: Union[Path, str], n:int) -> str:
    if n ==0:
        return Path(base_dir).name
    for _ in range(n):
        base_dir = Path(base_dir).parent
    return getattr(base_dir, "name")

path= "/folderA/folderB/folderC/folderD/"

# for getting the last part:
print(get_single_subpath_part(path, 0))
# yields "folderD"

# for the second last
print(get_single_subpath_part(path, 1))
#yields "folderC"

Furthermore, to pass the n-th part in reverse order of a path containing the remaining path, I use:

from typing import Union
from pathlib import Path

def get_n_last_subparts_path(base_dir: Union[Path, str], n:int) -> Path:
    return Path(*Path(base_dir).parts[-n-1:])

path= "/folderA/folderB/folderC/folderD/"

# for getting the last part:
print(get_n_last_subparts_path(path, 0))
# yields a `Path` object of "folderD"

# for second last and last part together 
print(get_n_last_subparts_path(path, 1))
# yields a `Path` object of "folderc/folderD"

Note that this function returns a Pathobject which can easily be converted to a string (e.g. str(path))

很快妥协 2024-10-04 06:56:12
path = "/folderA/folderB/folderC/folderD/"
last = path.split('/').pop()
path = "/folderA/folderB/folderC/folderD/"
last = path.split('/').pop()
情绪操控生活 2024-10-04 06:56:12
str = "/folderA/folderB/folderC/folderD/"
print str.split("/")[-2]
str = "/folderA/folderB/folderC/folderD/"
print str.split("/")[-2]
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