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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def _s3_resource(dallinger_region=False):
 """A boto3 S3 resource using the AWS keys in the config."""

    config = get_config()
    if not config.ready:
        config.load()

    region = "us-east-1" if dallinger_region else config.get("aws_region")
    return boto3.resource(
        "s3",
        region_name=region,
        aws_access_key_id=config.get("aws_access_key_id"),
        aws_secret_access_key=config.get("aws_secret_access_key"),
    )