49 lines
1.4 KiB
Python
49 lines
1.4 KiB
Python
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"""Module containing a preprocessor that converts outputs in the notebook from
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one format to another.
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"""
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# Copyright (c) Jupyter Development Team.
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# Distributed under the terms of the Modified BSD License.
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from .base import Preprocessor
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from traitlets import Unicode
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class ConvertFiguresPreprocessor(Preprocessor):
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"""
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Converts all of the outputs in a notebook from one format to another.
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"""
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from_format = Unicode(help='Format the converter accepts').tag(config=True)
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to_format = Unicode(help='Format the converter writes').tag(config=True)
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def __init__(self, **kw):
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"""
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Public constructor
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"""
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super().__init__(**kw)
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def convert_figure(self, data_format, data):
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raise NotImplementedError()
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def preprocess_cell(self, cell, resources, cell_index):
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"""
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Apply a transformation on each cell,
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See base.py
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"""
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# Loop through all of the datatypes of the outputs in the cell.
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for output in cell.get('outputs', []):
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if output.output_type in {'execute_result', 'display_data'} \
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and self.from_format in output.data \
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and self.to_format not in output.data:
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output.data[self.to_format] = self.convert_figure(
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self.from_format, output.data[self.from_format])
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return cell, resources
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