upstream/ipython Files · IPython/nbformat/v3/convert.py

ensure all needed qt parts can be imported before settling for one...

ensure all needed qt parts can be imported before settling for one required as qt installations can be incomplete in some distributions

Brian Granger - - Load All Authors

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             convert.py
        
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      """Code for converting notebooks to and from the v2 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 .nbbase import (

          new_code_cell, new_text_cell, new_worksheet, new_notebook, new_output

      )

      from IPython.nbformat import v2

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

      # Code

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

      def convert_to_this_nbformat(nb, orig_version=2):

          """Convert a notebook to the v3 format.

          Parameters

          ----------

          nb : NotebookNode

              The Python representation of the notebook to convert.

          orig_version : int

              The original version of the notebook to convert.

          """

          if orig_version == 1:

              nb = v2.convert_to_this_nbformat(nb)

              orig_version = 2

          if orig_version == 2:

              # Mark the original nbformat so consumers know it has been converted.

              nb.nbformat = 3

              nb.orig_nbformat = 2

              return nb

          elif orig_version == 3:

              return nb

          else:

              raise ValueError('Cannot convert a notebook from v%s to v3' % orig_version)

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				"""Code for converting notebooks to and from the v2 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 .nbbase import (
				new_code_cell, new_text_cell, new_worksheet, new_notebook, new_output
				)

				from IPython.nbformat import v2

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

				def convert_to_this_nbformat(nb, orig_version=2):
				"""Convert a notebook to the v3 format.

				Parameters
				----------
				nb : NotebookNode
				The Python representation of the notebook to convert.
				orig_version : int
				The original version of the notebook to convert.
				"""
				if orig_version == 1:
				nb = v2.convert_to_this_nbformat(nb)
				orig_version = 2
				if orig_version == 2:
				# Mark the original nbformat so consumers know it has been converted.
				nb.nbformat = 3
				nb.orig_nbformat = 2
				return nb
				elif orig_version == 3:
				return nb
				else:
				raise ValueError('Cannot convert a notebook from v%s to v3' % orig_version)