通过将凭据作为参数传递，使用 boto3 从 S3 存储桶下载文件

Question

根据 Boto3 官方文档，我们可以通过将凭据作为参数传递来连接 S3 存储桶。但我面临着问题。

工作场景：硬编码密钥 ID 和密钥

s3r = boto3.resource('s3', aws_access_key_id='XXXXXXXXXXXXXXXXXXXX',
    aws_secret_access_key='XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX')
buck = s3r.Bucket('bucket name')
buck.download_file(filename,filename)

非工作场景：作为参数传递

AccessKey = 'XXXXXXXXXXXXXXXXXXXX'
SecretKey = 'XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX'
s3r = boto3.resource('s3', aws_access_key_id=AccessKey, aws_secret_access_key=SecretKey)
buck = s3r.Bucket('bucket name')
buck.download_file(filename,filename)

对于非工作场景，我面临以下错误。

botocore.exceptions.ClientError: An error occurred (403) when calling the HeadObject operation: Forbidden

Answer 1

http://boto3.readthedocs.io/en/latest/guide/configuration.html

session = boto3.Session(aws_access_key_id=AccessKey, aws_secret_access_key=SecretKey)
s3 = session.resource('s3')