absent NullLogger fix for Python 2.6-

1 files changed, 9 insertions, 1 deletions

diff --git a/pyasn1/debug.py b/pyasn1/debug.py
index 9a79f20..9b69886 100644
--- a/pyasn1/debug.py
+++ b/pyasn1/debug.py
@@ -32,6 +32,14 @@ class Printer:
     def __call__(self, msg): self.__logger.debug(msg)
     def __str__(self): return '<python built-in logging>'
 
+if hasattr(logging, 'NullHandler'):
+    NullHandler = logging.NullHandler
+else:
+    # Python 2.6 and older
+    class NullHandler(logging.Handler):
+        def emit(self, record):
+            pass
+
 class Debug:
     defaultPrinter = None
     def __init__(self, *flags, **options):
@@ -44,7 +52,7 @@ class Debug:
             # route our logs to parent logger
             self._printer = Printer(
                 logger=logging.getLogger(options['loggerName']),
-                handler=logging.NullHandler()
+                handler=NullHandler()
             )
         else:
             self._printer = Printer()