This documentation is a draft for private preview for regions in the AWS European Sovereign Cloud. Documentation content will continue to evolve. Published: January 14, 2026.Use CreateSession with an AWS SDK
The following code example shows how to use CreateSession.
- Python
-
- SDK for Python (Boto3)
-
class S3ExpressWrapper:
"""Encapsulates Amazon S3 Express One Zone actions using the client interface."""
def __init__(self, s3_client: Any) -> None:
"""
Initializes the S3ExpressWrapper with an S3 client.
:param s3_client: A Boto3 Amazon S3 client. This client provides low-level
access to AWS S3 services.
"""
self.s3_client = s3_client
@classmethod
def from_client(cls) -> "S3ExpressWrapper":
"""
Creates an S3ExpressWrapper instance with a default s3 client.
:return: An instance of S3ExpressWrapper initialized with the default S3 client.
"""
s3_client = boto3.client("s3")
return cls(s3_client)
def create_session(self, bucket_name: str) -> None:
"""
Creates an express session.
:param bucket_name: The name of the bucket.
"""
try:
self.s3_client.create_session(Bucket=bucket_name)
except ClientError as client_error:
logging.error(
"Couldn't create the express session for bucket %s. Here's why: %s",
bucket_name,
client_error.response["Error"]["Message"],
)
raise
For a complete list of AWS SDK developer guides and code examples, see
Developing with Amazon S3 using the AWS SDKs.
This topic also includes information about getting started and details about previous SDK versions.