Coverage for /pythoncovmergedfiles/medio/medio/usr/local/lib/python3.8/site-packages/nbconvert/exporters/notebook.py: 53%

1"""NotebookExporter class""" 

2 

3# Copyright (c) IPython Development Team. 

4# Distributed under the terms of the Modified BSD License. 

5 

6import nbformat 

7from traitlets import Enum, default 

8 

9from .exporter import Exporter 

10 

11 

12class NotebookExporter(Exporter): 

13 """Exports to an IPython notebook. 

14 

15 This is useful when you want to use nbconvert's preprocessors to operate on 

16 a notebook (e.g. to execute it) and then write it back to a notebook file. 

17 """ 

18 

19 nbformat_version = Enum( 

20 list(nbformat.versions), 

21 default_value=nbformat.current_nbformat, 

22 help="""The nbformat version to write. 

23 Use this to downgrade notebooks. 

24 """, 

25 ).tag(config=True) 

26 

27 @default("file_extension") 

28 def _file_extension_default(self): 

29 return ".ipynb" 

30 

31 output_mimetype = "application/json" 

32 export_from_notebook = "Notebook" 

33 

34 def from_notebook_node(self, nb, resources=None, **kw): 

35 """Convert from notebook node.""" 

36 nb_copy, resources = super().from_notebook_node(nb, resources, **kw) 

37 if self.nbformat_version != nb_copy.nbformat: 

38 resources["output_suffix"] = ".v%i" % self.nbformat_version 

39 else: 

40 resources["output_suffix"] = ".nbconvert" 

41 output = nbformat.writes(nb_copy, version=self.nbformat_version) 

42 if not output.endswith("\n"): 

43 output = output + "\n" 

44 return output, resources