如何以Python方式上移n个目录? [英] How to move up n directories in Pythonic way?

问题描述

我正在寻找一种从给定目录上移n目录的pythonic方法.

I'm looking for a pythonic way to move up n directories from a given directory.

假设我们有示例路径/data/python_env/lib/python3.6/site-packages/matplotlib/mpl-data.如果要上移n=2目录，则应该以/data/python_env/lib/python3.6/site-packages结尾.

Let's say we have the example path /data/python_env/lib/python3.6/site-packages/matplotlib/mpl-data. If we were to move up n=2 directories we should end up at /data/python_env/lib/python3.6/site-packages.

以下方法可将n目录上移:

The following works to move up n directories:

up_n = lambda path, n: '/'.join(path.split('/')[:-n])

但是，它不是很可读，并且在Windows计算机上的路径失败.从本质上讲，它并不是一个非常Python的解决方案.

However, it's not very readable and fails for paths on windows machines. In essence, it doesn't feel a very pythonic solution.

是否有更好的，更Python化的解决方案，也许使用os模块?

Is there a better, more pythonic solution, maybe using the os module?

推荐答案

您可以使用标准库的pathlib 模块:

from pathlib import Path

path = Path('/data/python_env/lib/python3.6/site-packages/matplotlib/mpl-data')

levels_up = 2
print(path.parents[levels_up-1])
# /data/python_env/lib/python3.6/site-packages

这篇关于如何以Python方式上移n个目录?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！