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

protect IPython from bad custom exception handlers...

protect IPython from bad custom exception handlers Previously, errors in custom handlers would result in the custom exception handler's error being printed in lieu of the real exception, and certain cases could cause infinite loops. Now, if CustomTB fails it is unregistered immediately, and the original TB is also displayed. IPython's own BdbQuit_IPython_excepthook had an invalid signature, which revealed this issue, and has also been fixed. test included. closes

Brian E. Granger - - Load All Authors

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             nbjson.py
        
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      """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

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

      from base64 import encodestring

      from .rwbase import NotebookReader, NotebookWriter

      from .nbbase import from_dict

      import json

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

      # Code

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

      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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				"""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
				#-----------------------------------------------------------------------------

				from base64 import encodestring
				from .rwbase import NotebookReader, NotebookWriter
				from .nbbase import from_dict
				import json

				#-----------------------------------------------------------------------------
				# Code
				#-----------------------------------------------------------------------------

				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