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

Proper error handling for nbformat versions in client code....

Proper error handling for nbformat versions in client code. 1. Users are warned when an older nbformat notebook is converted. 2. The notebook notifies the user when a notebook that is too new is attempted to load. To test these things, create a simple notebook. Then change its nbformat field by hand to 2 (to test 1) and then 4 (to test 2).

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             log.py
        
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      import logging

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

      import zmq

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

				import zmq
				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"