有没有COMMIT模拟在Python中写入文件？ [英] is there COMMIT analog in python for writing into a file?

问题描述

我有一个文件可以写入，一个进程运行好几天 - 在相对随机的时刻写入文件。我的理解是 - 直到我做file.close（） - 有一个机会没有真正保存到磁盘。这是真的吗？

如果主进程没有完成时系统崩溃怎么办？有没有办法做一种提交一次，每...说 - 10分钟（我自己调用这个提交 - 不需要运行计时器）？是file.close（）和open（文件，'a'）唯一的方式，还是有更好的选择？

解决方案

你应该可以使用 file.flush（）来做到这一点。

I have a file open for writing, and a process running for days -- something is written into the file in relatively random moments. My understanding is -- until I do file.close() -- there is a chance nothing is really saved to disk. Is that true?

What if the system crashes when the main process is not finished yet? Is there a way to do kind of commit once every... say -- 10 minutes (and I call this commit myself -- no need to run timer)? Is file.close() and open(file,'a') the only way, or there are better alternatives?

解决方案

You should be able to use file.flush() to do this.

这篇关于有没有COMMIT模拟在Python中写入文件？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！