# Use `CreateSession` with an AWS SDK
<a name="s3-directory-buckets_example_s3-directory-buckets_CreateSession_section"></a>

The following code example shows how to use `CreateSession`.

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#### [ Python ]

**SDK for Python (Boto3)**  
 There's more on GitHub. Find the complete example and learn how to set up and run in the [AWS Code Examples Repository](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/python/example_code/s3-directory-buckets#code-examples). 

```
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 API details, see [CreateSession](https://docs.aws.amazon.com/goto/boto3/s3-2006-03-01/CreateSession) in *AWS SDK for Python (Boto3) API Reference*. 

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For a complete list of AWS SDK developer guides and code examples, see [Developing with Amazon S3 using the AWS SDKs](sdk-general-information-section.md). This topic also includes information about getting started and details about previous SDK versions.