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# ask-ai
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Ian Macleod

02/20/2024, 9:39 PM
@Scout I am getting the error
'S3Resource' object has no attribute 'get_object'
for my dagster s3 resource. I am trying to retrieve a file from s3 given an s3 uri. What's the best way to do this with the dagster s3resource object
s

Scout

02/20/2024, 9:39 PM
Based on the documentation, the
S3Resource
object in Dagster provides a way to interact with AWS S3. However, the
S3Resource
object itself does not have a
get_object
method. Instead, you should use the
get_client()
method provided by the
S3Resource
to obtain a boto3 S3 client, which does have the
get_object
method. Here's an example from the documentation on how to use the
S3Resource
to interact with S3:
Copy code
python from dagster import job, op, Definitions from dagster_aws.s3 import S3Resource  @op def example_s3_op(s3: S3Resource):     s3_client = s3.get_client()     return s3_client.list_objects_v2(         Bucket='my-bucket',         Prefix='some-key'     )  @job def example_job():     example_s3_op()  defs = Definitions(     jobs=[example_job],     resources={'s3': S3Resource(region_name='us-west-1')} )
In this example, the
example_s3_op
operation uses the
S3Resource
to get a boto3 client and then calls
list_objects_v2
on that client. If you want to retrieve an object, you would use the
get_object
method of the boto3 client, like so:
Copy code
python s3_client = s3.get_client() response = s3_client.get_object(Bucket='my-bucket', Key='my-key')
Remember to replace
'my-bucket'
and
'my-key'
with the actual bucket name and object key you are trying to retrieve. The
response
will contain the object data, which you can access using
response['Body'].read()
if you want to read the content of the file. If you encounter any issues or errors, ensure that your
S3Resource
is correctly configured with the necessary credentials and permissions to access the S3 bucket and objects.
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