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- """NotebookExporter class"""
- # Copyright (c) IPython Development Team.
- # Distributed under the terms of the Modified BSD License.
- import nbformat
- from traitlets import Enum, default
- from .exporter import Exporter
- class NotebookExporter(Exporter):
- """Exports to an IPython notebook.
- This is useful when you want to use nbconvert's preprocessors to operate on
- a notebook (e.g. to execute it) and then write it back to a notebook file.
- """
- nbformat_version = Enum(
- list(nbformat.versions),
- default_value=nbformat.current_nbformat,
- help="""The nbformat version to write.
- Use this to downgrade notebooks.
- """,
- ).tag(config=True)
- @default("file_extension")
- def _file_extension_default(self):
- return ".ipynb"
- output_mimetype = "application/json"
- export_from_notebook = "Notebook"
- def from_notebook_node(self, nb, resources=None, **kw):
- """Convert from notebook node."""
- nb_copy, resources = super().from_notebook_node(nb, resources, **kw)
- if self.nbformat_version != nb_copy.nbformat:
- resources["output_suffix"] = ".v%i" % self.nbformat_version
- else:
- resources["output_suffix"] = ".nbconvert"
- output = nbformat.writes(nb_copy, version=self.nbformat_version)
- if not output.endswith("\n"):
- output = output + "\n"
- return output, resources
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