upstream/ipython Files · IPython/nbformat/v1/nbjson.py

Shut down kernels in parallel...

Shut down kernels in parallel When stopping the notebook server, it currently sends a shutdown request to each kernel and then waits for the process to finish. This can be slow if you have several kernels running. This makes it issues all the shutdown requests before waiting on the processes, so shutdown happens in parallel. KernelManager (and MultiKernelManager) gain three new public API methods to allow this: * request_shutdown (promoted from a private method) * wait_shutdown (refactored out of shutdown_kernel) * cleanup (refactored out of shutdown_kernel)

Brian E. Granger - - Load All Authors

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             nbjson.py
        
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        Brian E. Granger
    
More review changes....

              r4609
            
      """Read and write notebooks in JSON format.

      Authors:

      * Brian Granger

      """

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

      #  Copyright (C) 2008-2011  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

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

        Brian E. Granger
    
Full versioning added to nbformat.

              r4406
            
      from base64 import encodestring

      from .rwbase import NotebookReader, NotebookWriter

      from .nbbase import from_dict

      import json

        Brian E. Granger
    
More review changes....

              r4609
            
      #-----------------------------------------------------------------------------

      # Code

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

        Brian E. Granger
    
Full versioning added to nbformat.

              r4406
            
      class JSONReader(NotebookReader):

          def reads(self, s, **kwargs):

              nb = json.loads(s, **kwargs)

              return self.to_notebook(nb, **kwargs)

          def to_notebook(self, d, **kwargs):

              """Convert from a raw JSON dict to a nested NotebookNode structure."""

              return from_dict(d)

      class JSONWriter(NotebookWriter):

          def writes(self, nb, **kwargs):

              kwargs['indent'] = 4

              return json.dumps(nb, **kwargs)

      _reader = JSONReader()

      _writer = JSONWriter()

      reads = _reader.reads

      read = _reader.read

      to_notebook = _reader.to_notebook

      write = _writer.write

      writes = _writer.writes

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Brian E. Granger More review changes....	r4609	"""Read and write notebooks in JSON format.

		Authors:

		* Brian Granger
		"""

		#-----------------------------------------------------------------------------
		# Copyright (C) 2008-2011 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
		#-----------------------------------------------------------------------------
Brian E. Granger Full versioning added to nbformat.	r4406
		from base64 import encodestring
		from .rwbase import NotebookReader, NotebookWriter
		from .nbbase import from_dict
		import json

Brian E. Granger More review changes....	r4609	#-----------------------------------------------------------------------------
		# Code
		#-----------------------------------------------------------------------------
Brian E. Granger Full versioning added to nbformat.	r4406
		class JSONReader(NotebookReader):

		def reads(self, s, **kwargs):
		nb = json.loads(s, **kwargs)
		return self.to_notebook(nb, **kwargs)

		def to_notebook(self, d, **kwargs):
		"""Convert from a raw JSON dict to a nested NotebookNode structure."""
		return from_dict(d)


		class JSONWriter(NotebookWriter):

		def writes(self, nb, **kwargs):
		kwargs['indent'] = 4
		return json.dumps(nb, **kwargs)


		_reader = JSONReader()
		_writer = JSONWriter()

		reads = _reader.reads
		read = _reader.read
		to_notebook = _reader.to_notebook
		write = _writer.write
		writes = _writer.writes