Changes in nbformat



4.2 on GitHub

  • Update nbformat spec version to 4.2, allowing JSON outputs to have any JSONable type, not just object, and mime-types of the form application/anything+json.
  • Define basics of authors in notebook metadata. nb.metadata.authors shall be a list of objects with the property name, a string of each author’s full name.
  • Update use of traitlets API to require traitlets 4.1.
  • Support trusting notebooks on stdin with cat notebook | jupyter trust



4.1 on GitHub

  • Update nbformat spec version to 4.1, adding support for attachments on markdown and raw cells.
  • Catch errors opening trust database, falling back on :memory: if the database cannot be opened.


4.0 on GitHub

The first release of nbformat as its own package.