1 files changed, 5 insertions, 0 deletions
diff --git a/type_utils.py b/type_utils.py
index 7b79af0..ee52444 100644
--- a/type_utils.py
+++ b/type_utils.py
@@ -7,6 +7,11 @@ 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)