s3- boto-按上传时间列出存储桶中的文件 [英] s3- boto- list files within a bucket by upload time

问题描述

我需要每小时从s3服务器下载100个最新文件.

I need to download every hour 100 newest files from s3 server.

bucketList = bucket.list(PREFIX)

上面的代码创建文件列表，但是它不取决于文件的上传时间，因为它按文件名列出?

The code above creates list of the files but it is not depend on the uploading time of the files, since it lists by file name?

我无法使用文件名.它是随机给的.

I can do nothing with file name. It is given randomly.

谢谢.

推荐答案

列表多大?您可以在Key的"last_modified"属性上对列表进行排序

How big is the list? You could sort the list on the 'last_modified' attr of the Key

orderedList = sorted(bucketList, key=lambda k: k.last_modified)
keysYouWant = orderedList[0:100]

如果您的列表很大，这可能无效.在boto.s3.bucket.Bucket中查看内联文档以获取list()函数.

If your list is HUGE this may not be efficient. Check out the inline docs for the list() function in boto.s3.bucket.Bucket.

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