是否可以指定以前的目录python？ [英] Is it possible to specify the previous directory python?

问题描述

我已经做了一些研究，没有一直在进行研究能够找到我正在寻找的答案。基本上，我想确定Python中是否有一个函数可以在shell中执行类似于 cd - 的操作。

我一般不希望输入完整的路径名，并且具有相对于指定环境的所有路径。

示例：
我有我的脚本所在的主目录 python-scripts ，我有每个测试环境的文件夹演示，以及每个测试环境的截图文件夹演示截图。

如果我想使用Python保存屏幕截图，而在演示目录中工作时，我只需将其发送到以下目录： demo-截图，使用路径'/ demo-screenshots / example.png'。问题是我不明白如何移回目录。

谢谢。

解决方案

您正在寻找更改工作目录？ python中的操作系统模块有很多功能可以帮助您。 p>

  import os 
 os.chdir（path）
  

路径正在..上传一个目录。如果您需要检查目录更改之前/之后的位置，您可以发出 getcwd（）命令：

  mycwd = os.getcwd（）
 os.chdir（..）
 #do在父目录中的东西
 os.chdir（mycwd ）＃返回你来自
  

I am attempting to make a Python testing script module self-contained directory-wise for scalability and maintainability purposes.

I have done some research and haven't been able to find the answer i'm looking for. Basically, I would like to determine if there is a function in Python that can do something similar to cd - in shell.

I would generally like to avoid typing in full path-names, and have all the paths relative to a specified environment.

Example: I have my main directory where my scripts are located python-scripts, I have folders for each testing environment demo, and a screenshot folder for each testing environment demo-screenshots.

If i wanted to save a screenshot to the screenshot with Python, while working in the demo directory, I would just send it to the directory below: demo-screenshots, using the path '/demo-screenshots/example.png'. The problem is that I don't understand how to move back a directory.

Thank you.

解决方案

You're looking to change the working directory? The OS module in python has a lot of functions to help with this.

import os
os.chdir( path )

path being ".." to go up one directory. If you need to check where you are before/after a change of directory you can issue the getcwd() command:

mycwd = os.getcwd()
os.chdir("..")
#do stuff in parent directory
os.chdir(mycwd)     # go back where you came from

这篇关于是否可以指定以前的目录python？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！