how to copy s3 object from one bucket to another using python boto3

Question

I want to copy a file from one s3 bucket to another. I get the following error:

s3.meta.client.copy(source,dest)
TypeError: copy() takes at least 4 arguments (3 given)

I'am unable to find a solution by reading the docs. Here is my code:

#!/usr/bin/env python import boto3 s3 = boto3.resource('s3') source= { 'Bucket' : 'bucketname1','Key':'objectname'} dest ={ 'Bucket' : 'Bucketname2','Key':'backupfile'} s3.meta.client.copy(source,dest) 

Answer 1

You can try:

import boto3 s3 = boto3.resource('s3') copy_source = {       'Bucket': 'mybucket',       'Key': 'mykey'     } bucket = s3.Bucket('otherbucket') bucket.copy(copy_source, 'otherkey') 

or

import boto3 s3 = boto3.resource('s3') copy_source = {     'Bucket': 'mybucket',     'Key': 'mykey'  } s3.meta.client.copy(copy_source, 'otherbucket', 'otherkey') 

Note the difference in the parameters

Answer 2

Since you are using s3 service resource, why not use its own copy method all the way?

#!/usr/bin/env python import boto3 s3 = boto3.resource('s3') source= { 'Bucket' : 'bucketname1', 'Key': 'objectname'} dest = s3.Bucket('Bucketname2') dest.copy(source, 'backupfile')