Botocore is a low-level interface to a growing number of Amazon Web Services. Botocore serves as the foundation for the AWS-CLI command line utilities. It will also play an important role in the boto3.x project.
Welcome to botocore — botocore 1.4.83 documentation
aws-cliのこまいバージョンアップはだいたいbotocoreのバージョンアップ。