upstream/ipython Files · IPython/kernel/zmq/log.py

Make traitlets notify check more robust against classes redefining equality and bool...

Make traitlets notify check more robust against classes redefining equality and bool Before this change, numpy arrays caused problems since comparing two numpy arrays returns an array of truth values, rather than a single truth value. This change guards against redefining the semantics of comparison by notifying on a trait change if the equality comparison returns anything other than an explicit True value.

Thomas Kluyver - - Load All Authors

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      from logging import INFO, DEBUG, WARN, ERROR, FATAL

      from zmq.log.handlers import PUBHandler

      class EnginePUBHandler(PUBHandler):

          """A simple PUBHandler subclass that sets root_topic"""

          engine=None

          def __init__(self, engine, *args, **kwargs):

              PUBHandler.__init__(self,*args, **kwargs)

              self.engine = engine

          @property

          def root_topic(self):

              """this is a property, in case the handler is created

              before the engine gets registered with an id"""

              if isinstance(getattr(self.engine, 'id', None), int):

                  return "engine.%i"%self.engine.id

              else:

                  return "engine"

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				from logging import INFO, DEBUG, WARN, ERROR, FATAL

				from zmq.log.handlers import PUBHandler

				class EnginePUBHandler(PUBHandler):
				"""A simple PUBHandler subclass that sets root_topic"""
				engine=None

				def __init__(self, engine, args, *kwargs):
				PUBHandler.__init__(self,args, *kwargs)
				self.engine = engine

				@property
				def root_topic(self):
				"""this is a property, in case the handler is created
				before the engine gets registered with an id"""
				if isinstance(getattr(self.engine, 'id', None), int):
				return "engine.%i"%self.engine.id
				else:
				return "engine"