'How to upload a file to S3 and make it public using boto3?

I am able to upload an image file using:

s3 = session.resource('s3')
bucket = s3.Bucket(S3_BUCKET)
bucket.upload_file(file, key)

However, I want to make the file public too. I tried looking up for some functions to set ACL for the file but seems like boto3 have changes their API and removed some functions. Is there a way to do it in the latest release of boto3?

python boto boto3

Solution 1:^[1]

To upload and set permission to publicly-readable in one step, you can use:

bucket.upload_file(file, key, ExtraArgs={'ACL':'public-read'})

See https://boto3.amazonaws.com/v1/documentation/api/latest/guide/s3-uploading-files.html#the-extraargs-parameter

Solution 2:^[2]

Adi's way works. However, if you were like me, you might have run into an access denied issue. This is normally caused by broken permissions of the user. I fixed it by adding the following to the Action array:

"s3:GetObjectAcl",
"s3:PutObjectAcl"

Solution 3:^[3]

In the recent versions of boto, ACL is available as a regular parameter - both when using the S3 client and resource, it seems. You can just specify ACL="public_read" without having to wrap it with ExtraParams or using ObjectAcl API.

Solution 4:^[4]

Set the ACL="public-read" as mentioned above.

Also, make sure your bucket policy Resource line has both the bare arn and /* arn formats. Not having them both can cause strange permissions problems.

...
"Resource": ["arn:aws:s3:::my_bucket/*", "arn:aws:s3:::my_bucket"]

Sources

This article follows the attribution requirements of Stack Overflow and is licensed under CC BY-SA 3.0.

Source: Stack Overflow

Solution	Source
Solution 1	Patrick Michaelsen
Solution 2	Rohan Bagchi
Solution 3	Czyzby
Solution 4	joel3000

'How to upload a file to S3 and make it public using boto3?

Solution 1:[1]

Solution 2:[2]

Solution 3:[3]

Solution 4:[4]

Sources

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