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             clientabc.py
        
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      """Abstract base class for kernel clients"""

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

      #  Copyright (C) 2013  The IPython Development Team

      #

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

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

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

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

      # Imports

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

      import abc

      from IPython.utils.py3compat import with_metaclass

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

      # Main kernel client class

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

      class KernelClientABC(with_metaclass(abc.ABCMeta, object)):

          """KernelManager ABC.

          The docstrings for this class can be found in the base implementation:

          `IPython.kernel.client.KernelClient`

          """

          @abc.abstractproperty

          def kernel(self):

              pass

          @abc.abstractproperty

          def shell_channel_class(self):

              pass

          @abc.abstractproperty

          def iopub_channel_class(self):

              pass

          @abc.abstractproperty

          def hb_channel_class(self):

              pass

          @abc.abstractproperty

          def stdin_channel_class(self):

              pass

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

          # Channel management methods

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

          @abc.abstractmethod

          def start_channels(self, shell=True, iopub=True, stdin=True, hb=True):

              pass

          @abc.abstractmethod

          def stop_channels(self):

              pass

          @abc.abstractproperty

          def channels_running(self):

              pass

          @abc.abstractproperty

          def shell_channel(self):

              pass

          @abc.abstractproperty

          def iopub_channel(self):

              pass

          @abc.abstractproperty

          def stdin_channel(self):

              pass

          @abc.abstractproperty

          def hb_channel(self):

              pass

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				"""Abstract base class for kernel clients"""

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

				#-----------------------------------------------------------------------------
				# Imports
				#-----------------------------------------------------------------------------

				import abc

				from IPython.utils.py3compat import with_metaclass

				#-----------------------------------------------------------------------------
				# Main kernel client class
				#-----------------------------------------------------------------------------

				class KernelClientABC(with_metaclass(abc.ABCMeta, object)):
				"""KernelManager ABC.

				The docstrings for this class can be found in the base implementation:

				`IPython.kernel.client.KernelClient`
				"""

				@abc.abstractproperty
				def kernel(self):
				pass

				@abc.abstractproperty
				def shell_channel_class(self):
				pass

				@abc.abstractproperty
				def iopub_channel_class(self):
				pass

				@abc.abstractproperty
				def hb_channel_class(self):
				pass

				@abc.abstractproperty
				def stdin_channel_class(self):
				pass

				#--------------------------------------------------------------------------
				# Channel management methods
				#--------------------------------------------------------------------------

				@abc.abstractmethod
				def start_channels(self, shell=True, iopub=True, stdin=True, hb=True):
				pass

				@abc.abstractmethod
				def stop_channels(self):
				pass

				@abc.abstractproperty
				def channels_running(self):
				pass

				@abc.abstractproperty
				def shell_channel(self):
				pass

				@abc.abstractproperty
				def iopub_channel(self):
				pass

				@abc.abstractproperty
				def stdin_channel(self):
				pass

				@abc.abstractproperty
				def hb_channel(self):
				pass