检索 S3 文件作为对象而不是下载到绝对系统路径 [英] Retrieve S3 file as Object instead of downloading to absolute system path

问题描述

我刚开始学习和使用 S3，阅读文档.实际上我没有找到任何东西可以将文件提取到对象中而不是从 S3 下载它?如果这是可能的，或者我遗漏了什么?

I just started learning and using S3, read the docs. Actually I didn't find anything to fetch the file into an object instead of downloading it from S3? if this could be possible, or I am missing something?

其实我想避免下载文件后的额外IO.

Actually I want to avoid additional IO after downloading the file.

推荐答案

您可以使用 StringIO 并使用 get_contents_as_string 从 S3 获取文件内容，如下所示:

You could use StringIO and get file content from S3 using get_contents_as_string, like this:

import pandas as pd
from io import StringIO
from boto.s3.connection import S3Connection

AWS_KEY = 'XXXXXXDDDDDD'
AWS_SECRET = 'pweqory83743rywiuedq'
aws_connection = S3Connection(AWS_KEY, AWS_SECRET)
bucket = aws_connection.get_bucket('YOUR_BUCKET')

fileName = "test.csv"

content = bucket.get_key(fileName).get_contents_as_string()
reader = pd.read_csv(StringIO.StringIO(content))

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