Add a default logging handler to avoid 'No handler found' warnings

django_autoconfig/autoconfig.py

@@ -16,8 +16,12 @@ def patterns(_, *args):
 import importlib
 import operator
 
+import django_autoconfig.compat as compat
+
 import logging
 LOGGER = logging.getLogger(__name__)
+# Set default logging handler to avoid "No handler found" warnings.
+LOGGER.addHandler(compat.NullHandler())
 
 MAX_ITERATIONS = 1000
 

django_autoconfig/compat.py

@@ -0,0 +1,7 @@
+import logging
+try:  # Python 2.7+
+    from logging import NullHandler  # pylint: disable=unused-import
+except ImportError:
+    class NullHandler(logging.Handler):
+        def emit(self, record):
+            pass

django_autoconfig/environment_settings/autoconfig.py

@@ -4,7 +4,11 @@
 import logging
 import os
 
+import django_autoconfig.compat
+
 LOGGER = logging.getLogger(__name__)
+# Set default logging handler to avoid "No handler found" warnings.
+LOGGER.addHandler(django_autoconfig.compat.NullHandler())
 
 def _ignore_setting(name):
     return name == 'SETTINGS_MODULE'