Fixed #18985 -- made DeprecationWarnings loud

Capture warnings in Python >= 2.7 and route through
console handler, which is subject to DEBUG==True

Thanks to dstufft for the idea, and claudep for initial patch

1 files changed, 10 insertions, 0 deletions

diff --git a/django/conf/__init__.py b/django/conf/__init__.py
index 4e6f0f9211..dec4cf9418 100644
--- a/django/conf/__init__.py
+++ b/django/conf/__init__.py
@@ -6,6 +6,7 @@ variable, and then from django.conf.global_settings; see the global settings fil
 a list of all possible variables.
 """
 
+import logging
 import os
 import time     # Needed for Windows
 import warnings
@@ -55,6 +56,15 @@ class LazySettings(LazyObject):
         """
         Setup logging from LOGGING_CONFIG and LOGGING settings.
         """
+        try:
+            # Route warnings through python logging
+            logging.captureWarnings(True)
+            # Allow DeprecationWarnings through the warnings filters
+            warnings.simplefilter("default", DeprecationWarning)
+        except AttributeError:
+            # No captureWarnings on Python 2.6, DeprecationWarnings are on anyway
+            pass
+
         if self.LOGGING_CONFIG:
             from django.utils.log import DEFAULT_LOGGING
             # First find the logging configuration function ...