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

Remove print statements in ZMQ parent pollers....

Remove print statements in ZMQ parent pollers. These statements were originally inserted for debugging purposes. However, if the parent process owns the child's stdout and the parent dies, the print statements will deadlock, preventing the poller from terminating its process and thereby utterly breaking it.

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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"