防止python搁置损坏 [英] Prevent python shelve corruption

问题描述

我应该如何防止搁置文件中的损坏?应该在大多数时候关闭货架，然后仅在需要读取或编辑值时才打开货架吗?

How should I prevent corruption in a shelve file? Should the shelve be closed most of the time and then opened only when I need to read or edit a value?

推荐答案

如果持久性对象的安全性在您的项目中至关重要，那么使用shelve并不是一个好主意.腌制对象并手动将它们写入文件都不会.

If safety of your persistent objects is of high importance in your project, using shelve is not a good idea. Neither is pickling objects and manually writing them into files.

请考虑一下，实际数据库会投入大量资源(包括强大的功能和代码)来确保万一发生故障时的安全.因此，将数据保存在真实的数据库中.最简单的是sqlite，因为它与Python捆绑在一起. sqlite是相当安全的，并且即使在系统出现故障(例如有人用PC的电源线跳闸)时，也可以保持数据处于有效状态，这方面有很多技巧.

Consider that real databases invest huge resources (brainpower and code) to be safe in case of failures. So keep your data in a real DB. The simplest would be sqlite, as it comes bundled with Python. sqlite is quite safe and has a lot of smarts in it about keeping your data in some valid state even in case of system failures (like when someone trips on your PC's power cable).

这篇关于防止python搁置损坏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！