如何使用boto3从Amazon S3获取.stl文件? [英] How to get .stl file from Amazon S3 by using boto3?

问题描述

我有一个Django Web应用程序，并将其部署到了Elastic Beanstalk环境.我也有numpy-stl软件包.我试图从Amazon S3存储桶中获取一个.stl文件，并将此文件与stl包的功能一起使用，但是却遇到诸如'bytes'对象没有属性'get_mass_properties'之类的错误.

I have a Django Web application and i deployed it to Elastic Beanstalk environment. I also have the numpy-stl package. I'm trying to get a .stl file from Amazon S3 bucket and use this file with a stl package's function but i'm getting an error such as 'bytes' object has no attribute 'get_mass_properties'.

我的代码是;

s3 = boto3.client('s3')
obj = s3.get_object(Bucket=bucket_name, Key=key)
body = obj['Body'].read()
volume, cog, inertia = body.get_mass_properties()

如何获取.stl文件并使用它?

How can i get the .stl file and use it?

推荐答案

我已修复如下问题.

import stl
import boto3
import tempfile

s3 = boto3.resource('s3', region_name=region)
bucket = s3.Bucket(bucket)
obj = bucket.Object(uploadedVolume)
tmp = tempfile.NamedTemporaryFile()
with open(tmp.name, 'wb') as f:
    obj.download_fileobj(f)
    stlMesh = stl.mesh.Mesh.from_file(tmp.name)

volume, cog, inertia = stlMesh.get_mass_properties()

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