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Description:

jsonschemaextended 0.6

jsonschema is an implementation of JSON Schema
for Python (supporting 2.7+ including Python 3).
>>> 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'
It can also be used from console:
$ jsonschema -i sample.json sample.schema

Features

Full support for
Draft 6,
Draft 4
and
Draft 3
Lazy validation
that can iteratively report all validation errors.
Small and extensible
Programmatic querying
of which properties or items failed validation.

Release Notes
Version 2.6.0 drops support for Python 2.6.X (ha ha) and contains a
number of small improvements in error messages, as well as a bug fix for
ErrorTree.

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. 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.
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 perf.
Running them can be done via tox -e perf, or by invoking the perf
commands externally (after ensuring that both it and jsonschema itself are
installed):
$ python -m perf jsonschema/benchmarks/test_suite.py --hist --output results.json
To compare to a previous run, use:
$ python -m perf compare_to --table reference.json results.json
See the perf documentation for more details.

Community
There’s a mailing list
for this implementation on Google Groups.
Please join, and feel free to send questions there.

Contributing
I’m Julian Berman.
jsonschema is on GitHub.
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 woo me with beer money via
Google Pay with the email in my GitHub profile.