def pool_for_resource(self, resource_name):
return S3Meterer.resource_to_bucket_and_key(resource_name)[<NUM_LIT:0>]<EOL>
s3meterer.pool_for_resource(resource_name) -> str

Returns the bucket for the given S3 resource, to be used as the
metering pool. The S3 resource must be in the form 's3://bucket/key'.