added DjangoHttp404LogFilter

Author: florianschieder

python_logging_filters/__init__.py

@@ -0,0 +1,18 @@
+import logging
+import re
+
+
+class DjangoHttp404LogFilter(logging.Filter):
+    """Suppresses Django's default 'Not Found: ...' log messages.
+
+    See the Django docs how to attach filters to logging handlers via
+    the LOGGING setting.
+    """
+    PATTERN = re.compile("^Not Found:")
+
+    def filter(self, record: logging.LogRecord) -> bool:
+        return (
+            self.PATTERN.fullmatch(record.msg) is not None
+            and record.levelno == logging.WARNING
+            and record.name.startswith("django")
+        )