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==========
jsonschema
==========
``jsonschema`` is an implementation of `JSON Schema <http://json-schema.org>`_
for Python (supporting 2.6+ including Python 3).
.. code-block:: python
>>> from jsonschema import validate
>>> # A sample schema, like what we'd get from json.load()
>>> schema = {
... "type" : "object",
... "properties" : {
... "price" : {"type" : "number"},
... "name" : {"type" : "string"},
... },
... }
>>> # If no exception is raised by validate(), the instance is valid.
>>> validate({"name" : "Eggs", "price" : 34.99}, schema)
>>> validate(
... {"name" : "Eggs", "price" : "Invalid"}, schema
... ) # doctest: +IGNORE_EXCEPTION_DETAIL
Traceback (most recent call last):
...
ValidationError: 'Invalid' is not of type 'number'
Features
--------
* `Full support <https://python-jsonschema.readthedocs.org/en/latest/#jsonschema.Draft3Validator>`_
for `Draft 3 <http://tools.ietf.org/html/draft-zyp-json-schema-03>`_ of the
schema
* `Lazy validation <https://python-jsonschema.readthedocs.org/en/latest/validate.html#jsonschema.IValidator.iter_errors>`_
that can iteratively report *all* validation errors.
* Small and extensible
* `Programmatic querying <https://python-jsonschema.readthedocs.org/en/latest/errors.html#module-jsonschema>`_
of which properties or items failed validation.
Release Notes
-------------
``v0.8.0`` introduces full support for JSON references via the ``RefResolver``
object. It also removes all of the deprecated code from ``v0.7``.
Other notable fixes are a fix for improper support of ``uniqueItems`` for
``True`` and ``False`` (#34) and ``any`` for unknown types (#47).
Notably, there now exists some documentation (woo hoo!). It can be found at:
http://python-jsonschema.readthedocs.org
There are still a few incomplete sections, but it's mostly there. Patches
welcome for weak points.
Running the Test Suite
----------------------
``jsonschema`` uses the wonderful `Tox <http://tox.readthedocs.org>`_ for its
test suite. (It really is wonderful, if for some reason you haven't heard of
it, you really should use it for your projects).
Assuming you have ``tox`` installed (perhaps via ``pip install tox`` or your
package manager), just run ``tox`` in the directory of your source checkout to
run ``jsonschema``'s test suite on all of the versions of Python ``jsonschema``
supports. Note that you'll need to have all of those versions installed in
order to run the tests on each of them, otherwise ``tox`` will skip (and fail)
the tests on that version.
Contributing
------------
I'm Julian Berman.
``jsonschema`` is on `GitHub <http://github.com/Julian/jsonschema>`_.
Get in touch, via GitHub or otherwise, if you've got something to contribute,
it'd be most welcome!
You can also generally find me on Freenode (nick: ``tos9``) in various
channels, including ``#python``.
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