#!/usr/bin/env python3

import logging
from typing import Any, Optional

logger = logging.getLogger(__name__)


def unwrap_optional(x: Optional[Any]) -> Any:
    """Unwrap an Optional[Type] argument returning a Type value back.
    If the Optional[Type] argument is None, however, raise an exception.
    Use this to satisfy most type checkers that a value that could
    be None isn't so as to drop the Optional.
    """
    if x is None:
        msg = 'Argument to unwrap_optional was unexpectedly None'
        logger.critical(msg)
        raise AssertionError(msg)
    return x