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==========
jsonschema
==========
|PyPI| |Pythons| |CI| |ReadTheDocs|
.. |PyPI| image:: https://img.shields.io/pypi/v/jsonschema.svg
:alt: PyPI version
:target: https://pypi.org/project/jsonschema/
.. |Pythons| image:: https://img.shields.io/pypi/pyversions/jsonschema.svg
:alt: Supported Python versions
:target: https://pypi.org/project/jsonschema/
.. |CI| image:: https://github.com/Julian/jsonschema/workflows/CI/badge.svg
:alt: Build status
:target: https://github.com/Julian/jsonschema/actions?query=workflow%3ACI
.. |ReadTheDocs| image:: https://readthedocs.org/projects/python-jsonschema/badge/?version=stable&style=flat
:alt: ReadTheDocs status
:target: https://python-jsonschema.readthedocs.io/en/stable/
``jsonschema`` is an implementation of `JSON Schema
<https://json-schema.org>`_ for Python.
.. 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(instance={"name" : "Eggs", "price" : 34.99}, schema=schema)
>>> validate(
... instance={"name" : "Eggs", "price" : "Invalid"}, schema=schema,
... ) # doctest: +IGNORE_EXCEPTION_DETAIL
Traceback (most recent call last):
...
ValidationError: 'Invalid' is not of type 'number'
It can also be used from console:
.. code-block:: bash
$ jsonschema --instance sample.json sample.schema
Features
--------
* Full support for
`Draft 7 <https://python-jsonschema.readthedocs.io/en/latest/validate/#jsonschema.Draft7Validator>`_,
`Draft 6 <https://python-jsonschema.readthedocs.io/en/latest/validate/#jsonschema.Draft6Validator>`_,
`Draft 4 <https://python-jsonschema.readthedocs.io/en/latest/validate/#jsonschema.Draft4Validator>`_
and
`Draft 3 <https://python-jsonschema.readthedocs.io/en/latest/validate/#jsonschema.Draft3Validator>`_
* `Lazy validation <https://python-jsonschema.readthedocs.io/en/latest/validate/#jsonschema.IValidator.iter_errors>`_
that can iteratively report *all* validation errors.
* `Programmatic querying <https://python-jsonschema.readthedocs.io/en/latest/errors/>`_
of which properties or items failed validation.
Installation
------------
``jsonschema`` is available on `PyPI <https://pypi.org/project/jsonschema/>`_. You can install using `pip <https://pip.pypa.io/en/stable/>`_:
.. code-block:: bash
$ pip install jsonschema
Running the Test Suite
----------------------
If you have ``tox`` installed (perhaps via ``pip install tox`` or your
package manager), running ``tox`` in the directory of your source
checkout will run ``jsonschema``'s test suite on all of the versions
of Python ``jsonschema`` supports. If you don't have all of the
versions that ``jsonschema`` is tested under, you'll likely want to run
using ``tox``'s ``--skip-missing-interpreters`` option.
Of course you're also free to just run the tests on a single version with your
favorite test runner. The tests live in the ``jsonschema.tests`` package.
Benchmarks
----------
``jsonschema``'s benchmarks make use of `pyperf
<https://pyperf.readthedocs.io>`_. Running them can be done via::
$ tox -e perf
Community
---------
The JSON Schema specification has `a Slack
<https://json-schema.slack.com>`_, with an `invite link on its home page
<https://json-schema.org/>`_. Many folks knowledgeable on authoring
schemas can be found there.
Otherwise, asking questions on Stack Overflow is another means of
getting help if you're stuck.
Contributing
------------
I'm Julian Berman.
``jsonschema`` is on `GitHub <https://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``.
If you feel overwhelmingly grateful, you can also woo me with beer money
via Google Pay with the email in my GitHub profile.
And for companies who appreciate ``jsonschema`` and its continued support
and growth, ``jsonschema`` is also now supportable via `TideLift
<https://tidelift.com/subscription/pkg/pypi-jsonschema?utm_source=pypi-j
sonschema&utm_medium=referral&utm_campaign=readme>`_.
|
