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"""Code for converting notebooks to and from the v2 format.
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Authors:
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* Brian Granger
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"""
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#-----------------------------------------------------------------------------
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# Copyright (C) 2008-2011 The IPython Development Team
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#
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# Distributed under the terms of the BSD License. The full license is in
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# the file COPYING, distributed as part of this software.
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#-----------------------------------------------------------------------------
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#-----------------------------------------------------------------------------
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# Imports
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#-----------------------------------------------------------------------------
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from .nbbase import (
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new_code_cell, new_text_cell, new_worksheet, new_notebook, new_output
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)
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from IPython.nbformat import v2
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#-----------------------------------------------------------------------------
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# Code
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#-----------------------------------------------------------------------------
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def convert_to_this_nbformat(nb, orig_version=2):
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"""Convert a notebook to the v3 format.
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Parameters
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----------
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nb : NotebookNode
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The Python representation of the notebook to convert.
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orig_version : int
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The original version of the notebook to convert.
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"""
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if orig_version == 1:
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nb = v2.convert_to_this_nbformat(nb)
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orig_version = 2
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if orig_version == 2:
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# Mark the original nbformat so consumers know it has been converted.
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nb.nbformat = 3
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nb.orig_nbformat = 2
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return nb
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elif orig_version == 3:
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return nb
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else:
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raise ValueError('Cannot convert a notebook from v%s to v3' % orig_version)
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