def _warn_deprecated_python():
    """Use this template for future deprecation campaigns as needed."""
    py_37_params = {
        'date': 'December 13, 2023',
        'blog_link': (
            'https://aws.amazon.com/blogs/developer/'
            'python-support-policy-updates-for-aws-sdks-and-tools/'
        )
    }
    deprecated_versions = {
        # Example template for future deprecations
        (3, 7): py_37_params,
    }
    py_version = sys.version_info[:2]

    if py_version in deprecated_versions:
        params = deprecated_versions[py_version]
        warning = (
            "Boto3 will no longer support Python {}.{} "
            "starting {}. To continue receiving service updates, "
            "bug fixes, and security updates please upgrade to Python 3.8 or "
            "later. More information can be found here: {}"
        ).format(py_version[0], py_version[1], params['date'], params['blog_link'])
        warnings.warn(warning, PythonDeprecationWarning)
Use this template for future deprecation campaigns as needed.
boto3/compat.py