"""Boto3 s3 connector."""

import boto3

s3_client = None


def get_s3_client():
    """Connect to S3.

    Returns:
         botocore.client.S3 : Client object provides access to s3.
    """
    global s3_client
    if not s3_client:
        s3_client = boto3.client('s3')
    return s3_client