Add NullHandler to loggers to prevent spurious error messages

Supporting python 2.6+

requests_kerberos/__init__.py

@@ -12,9 +12,14 @@ authentication. Basic GET usage:
 
 The entire `requests.api` should be supported.
 """
+import logging
+import sys
+
 from .kerberos_ import HTTPKerberosAuth, REQUIRED, OPTIONAL, DISABLED
 from .exceptions import MutualAuthenticationError
+from .compat import NullHandler
 
+logging.getLogger(__name__).addHandler(NullHandler())
 
 __all__ = [HTTPKerberosAuth, MutualAuthenticationError, REQUIRED, OPTIONAL, DISABLED]
 __version__ = '0.1'

requests_kerberos/compat.py

@@ -0,0 +1,14 @@
+"""
+Compatibility library for older versions of python
+"""
+import sys
+
+# python 2.7 introduced a NullHandler which we want to use, but to support
+# older versions, we implement our own if needed.
+if sys.version_info[:2] > (2, 6):
+    from logging import NullHandler
+else:
+    from logging import Handler
+    class NullHandler(Handler):
+        def emit(self, record):
+            pass