Release b6a37b5eba

__init__.py

 import time
 
 
-logger_name = 'SOCKET_PROTOCOL'
-logger = logging.getLogger(logger_name)
+try:
+    from config import APP_NAME as ROOT_LOGGER_NAME
+except ImportError:
+    ROOT_LOGGER_NAME = 'root'
+logger = logging.getLogger(ROOT_LOGGER_NAME).getChild(__name__)
 
 
 __DESCRIPTION__ = """The Module {\\tt %s} is designed to pack and unpack data for serial transportation.
             return self[None][None]
         except KeyError:
             pass  # nothing to append
-        return None
+        return (None, None, None)
 
     def add(self, service_id, data_id, callback, *args, **kwargs):
-        if self.get(service_id, data_id) is not None:
+        if self.get(service_id, data_id) != (None, None, None):
             raise RegistrationError("Callback for service_id (%s) and data_id (%s) already exists" % (repr(service_id), repr(data_id)))
         if service_id not in self:
             self[service_id] = {}