I have a file contained in a key in my S3 bucket. I want to create a new key, which will contain the same file. Is it possible to do without downloading that file?
I'm looking for a solution in Python (and preferably boto library).
S3 allows object by object copy.
The CopyObject operation creates a copy of an object when you specify the key and bucket of a source object and the key and bucket of a target destination. 
Not sure if boto has a compact implementation.
How to clone a key in Amazon S3 using Python (and boto)?