通过传递凭据作为参数，使用boto3从S3存储桶下载文件

Question

As per Boto3 official documentation, we can connect S3 bucket by passing credentials as a parameters. But I am facing issues.

Working Scenario : Hardcoding Key ID & Secret Key

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

Non Working Scenario : Passing as parameters

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)

I am facing below error for non-working scenario.

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')