是否可以不通过boto3下载而获取S3文件的内容? [英] Is it possible to get the contents of an S3 file without downloading it using boto3?

问题描述

我正在研究从Redshift数据库中转储文件的过程，并且希望不必在本地下载文件来处理数据.我看到Java有一个StreamingObject类，该类可以满足我的要求，但在boto3中却没有看到任何类似的东西.

I am working on a process to dump files from a Redshift database, and would prefer not to have to locally download the files to process the data. I saw that Java has a StreamingObject class that does what I want, but I haven't seen anything similar in boto3.

推荐答案

如果您有一个mybucket S3存储桶，其中包含一个beer密钥，这是下载和获取值而不将其存储在本地的方法文件:

If you have a mybucket S3 bucket, which contains a beer key, here is how to download and fetch the value without storing it in a local file:

import boto3
s3 = boto3.resource('s3')
print s3.Object('mybucket', 'beer').get()['Body'].read()

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