amazon web services - Python - how to access file downloaded from S3 to reupload

Question

Trying to download from an S3 via a python lambda and then re-upload the file to a different folder (I don't want to just use a client to move folder i actually want to download and re-upload)

    #Download object to the file    
    obj = s3_resource.Bucket('my-bucket').download_file('test-large-file-transfer-base/testnote.pdf', '/tmp/testnote.pdf')
    s3_resource.Bucket('my-bucket').upload_file(obj, 'test-large-file-transfer-target/')

The above code results in the error

"errorMessage": "Filename must be a string",

question from:https://stackoverflow.com/questions/65900554/python-how-to-access-file-downloaded-from-s3-to-reupload

Answer 1

First argument to upload_file should be string, but in your case it is some object obj.

So, to upload /tmp/testnote.pdf to my-bucket it should be (you also need to modify key):

s3_resource.Bucket('my-bucket').upload_file('/tmp/testnote.pdf', 'test-large-file-transfer-target/testnote.pdf')