Start using warnings from stdlib.

1 files changed, 4 insertions, 1 deletions

diff --git a/persistent.py b/persistent.py
index f6ca0a0..2751572 100644
--- a/persistent.py
+++ b/persistent.py
@@ -7,6 +7,7 @@ import enum
 import functools
 import logging
 from typing import Any
+import warnings
 
 import file_utils
 
@@ -143,7 +144,9 @@ class persistent_autoloaded_singleton(object):
             logger.debug(f'Attempting to load {cls.__name__} from persisted state.')
             self.instance = cls.load()
             if not self.instance:
-                logger.warning('Loading from cache failed.')
+                msg = 'Loading from cache failed.'
+                logger.warning(msg)
+                warnings.warn(msg)
                 logger.debug(f'Attempting to instantiate {cls.__name__} directly.')
                 self.instance = cls(*args, **kwargs)
             else: