Notebook Validation
===================

``validate`` validates notebooks, using ``nbformat.validate()``.
This takes the notebook version into account.

When the notebook is invalid, a message explains the problem.

Only in verbose mode, will ``validate`` report explicitly that a notebook is valid.
Otherwise, it will quietly continue.


Options
-------

``validate`` does not take any special options.


Examples
--------

Check two notebooks, one valid and the other not,
with verbose mode:

.. code-block:: bash

  $ nbtb validate test.ipynb test-bad.ipynb -v

    ::::::::::::::
    test.ipynb
    ::::::::::::::
    test.ipynb notebook structure is valid

    ::::::::::::::
    test-bad.ipynb
    ::::::::::::::
    test-bad.ipynb notebook structure is INVALID

    Additional properties are not allowed ('BAD_src' was unexpected)

    Failed validating 'additionalProperties' in markdown_cell:

    On instance['cells'][1]:
    {'BAD_src': ['This is a notebook for testing purposes;\n',
                 'in particular, for testing the various scripts.\n',
                 '\n',
                 'It has a few formatted _MarkDown_ cells.\n',
                 'And some simple code cells, with various execution effects;\n',
                 'some (not only the last) has an error.\n',
                 'Various tags have been set.'],
     'cell_type': 'markdown',
     'metadata': {}}

    Files processed: 2