upstream/ipython Files · IPython/utils/zmqrelated.py

restart channels on kernel restart...

restart channels on kernel restart generally not necessary, but sometimes the kernel connection can be dirty. We have only seen this by starting a qtconsole via %qtconsole, then killing the kernel, at which point the original notebook's connection (at the zmq level) is never restored to the new kernel at the same endpoint. It's weird, and probably a zmq bug, but a simple reconnect seems to solve it.

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      """utilities for checking zmq versions"""

      #-----------------------------------------------------------------------------

      #  Copyright (C) 2013  The IPython Development Team

      #

      #  Distributed under the terms of the BSD License.  The full license is in

      #  the file COPYING.txt, distributed as part of this software.

      #-----------------------------------------------------------------------------

      #-----------------------------------------------------------------------------

      # Verify zmq version dependency >= 2.1.11

      #-----------------------------------------------------------------------------

      import warnings

      from IPython.utils.version import check_version

      def patch_pyzmq():

          """backport a few patches from newer pyzmq

          These can be removed as we bump our minimum pyzmq version

          """

          import zmq

          # fallback on stdlib json if jsonlib is selected, because jsonlib breaks things.

          # jsonlib support is removed from pyzmq >= 2.2.0

          from zmq.utils import jsonapi

          if jsonapi.jsonmod.__name__ == 'jsonlib':

              import json

              jsonapi.jsonmod = json

      def check_for_zmq(minimum_version, required_by='Someone'):

          try:

              import zmq

          except ImportError:

              raise ImportError("%s requires pyzmq >= %s"%(required_by, minimum_version))

          patch_pyzmq()

          pyzmq_version = zmq.__version__

          if not check_version(pyzmq_version, minimum_version):

              raise ImportError("%s requires pyzmq >= %s, but you have %s"%(

                              required_by, minimum_version, pyzmq_version))

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				"""utilities for checking zmq versions"""
				#-----------------------------------------------------------------------------
				# Copyright (C) 2013 The IPython Development Team
				#
				# Distributed under the terms of the BSD License. The full license is in
				# the file COPYING.txt, distributed as part of this software.
				#-----------------------------------------------------------------------------

				#-----------------------------------------------------------------------------
				# Verify zmq version dependency >= 2.1.11
				#-----------------------------------------------------------------------------

				import warnings
				from IPython.utils.version import check_version


				def patch_pyzmq():
				"""backport a few patches from newer pyzmq

				These can be removed as we bump our minimum pyzmq version
				"""

				import zmq

				# fallback on stdlib json if jsonlib is selected, because jsonlib breaks things.
				# jsonlib support is removed from pyzmq >= 2.2.0

				from zmq.utils import jsonapi
				if jsonapi.jsonmod.__name__ == 'jsonlib':
				import json
				jsonapi.jsonmod = json


				def check_for_zmq(minimum_version, required_by='Someone'):
				try:
				import zmq
				except ImportError:
				raise ImportError("%s requires pyzmq >= %s"%(required_by, minimum_version))

				patch_pyzmq()

				pyzmq_version = zmq.__version__

				if not check_version(pyzmq_version, minimum_version):
				raise ImportError("%s requires pyzmq >= %s, but you have %s"%(
				required_by, minimum_version, pyzmq_version))