如何存储Python应用程序数据

问题描述：

我正在创建一个简单的Python CLI工具，该工具可让用户添加和删除任务(经典的Todo应用程序).这仅供我自己使用，但是我想了解创建此类应用程序的最佳实践.数据将存储在一个简单的文本文件中.

I'm creating a simple Python CLI tool, which lets the user add and delete tasks (the classic Todo app). This is just for my own use, but I want to get into the best practices of creating such applications. The data will be stored in a simple text file.

主要问题:我应该将数据文件存储在哪里?在完成一些阅读之后，倾向于在/var/lib中创建一个新文件夹，并将data.txt文件保留在该目录中.该选项有什么缺点吗?

Main question: Where should I store the data file? After doing some reading, I'm inclined to create a new folder in /var/lib and keep the data.txt file in that directory. Are there any drawbacks to that option?

后续问题:由于默认情况下，只有超级用户才能访问/var，因此我是否需要更改整个/var目录的权限才能读取和写入数据文件?

Follow up question: Since, by default, only root has access to /var, do I need to change the permissions for the whole /var directory in order to read and write to the data file?

答

用户数据应存储在用户的主目录中.您可以使用

User data should be store in the user's home directory. You could use

/Users/joe/.myclitool/data.txt

在Mac OS X和

/home/joe/.myclitool/data.txt

在GNU/Linux下.

under GNU/Linux.

在Python中，这可以通过

In Python this can be done with

import os
import os.path

p = os.path.join(os.getenv("HOME"), ".myclitool", "data.txt")

如何存储Python应用程序数据

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