This is a pre-production deployment of Warehouse. Changes made here affect the production instance of PyPI (pypi.python.org).
Help us improve Python packaging - Donate today!

An implementation of JSON Reference for Python

Project Description

jsonref is a library for automatic dereferencing of JSON Reference objects for Python (supporting 2.6+ including Python 3).

This library lets you use a data structure with JSON reference objects, as if the references had been replaced with the referent data.

>>> from pprint import pprint
>>> import jsonref

>>> # An example json document
>>> json_str = """{"real": [1, 2, 3, 4], "ref": {"$ref": "#/real"}}"""
>>> data = jsonref.loads(json_str)
>>> pprint(data)  # Reference is not evaluated until here
{'real': [1, 2, 3, 4], 'ref': [1, 2, 3, 4]}

Features

  • References are evaluated lazily. Nothing is dereferenced until it is used.
  • Recursive references are supported, and create recursive python data structures.

References objects are actually replaced by lazy lookup proxy objects which are almost completely transparent.

>>> data = jsonref.loads('{"real": [1, 2, 3, 4], "ref": {"$ref": "#/real"}}')
>>> # You can tell it is a proxy by using the type function
>>> type(data["real"]), type(data["ref"])
(<class 'list'>, <class 'jsonref.JsonRef'>)
>>> # You have direct access to the referent data with the __subject__
>>> # attribute
>>> type(data["ref"].__subject__)
<class 'list'>
>>> # If you need to get at the reference object
>>> data["ref"].__reference__
{'$ref': '#/real'}
>>> # Other than that you can use the proxy just like the underlying object
>>> ref = data["ref"]
>>> isinstance(ref, list)
True
>>> data["real"] == ref
True
>>> ref.append(5)
>>> del ref[0]
>>> # Actions on the reference affect the real data (if it is mutable)
>>> pprint(data)
{'real': [2, 3, 4, 5], 'ref': [2, 3, 4, 5]}
Release History

Release History

This version
History Node

0.3-dev

Download Files

Download Files

Download the file for your platform. If you're not sure which to choose, learn more about installing packages.

File Name & Checksum SHA256 Checksum Help Version File Type Upload Date
jsonref-ap-0.3-dev.tar.gz (12.4 kB) Copy SHA256 Checksum SHA256 Source Mar 30, 2016

Supported By

WebFaction WebFaction Technical Writing Elastic Elastic Search Pingdom Pingdom Monitoring Dyn Dyn DNS Sentry Sentry Error Logging CloudAMQP CloudAMQP RabbitMQ Heroku Heroku PaaS Kabu Creative Kabu Creative UX & Design Fastly Fastly CDN DigiCert DigiCert EV Certificate Rackspace Rackspace Cloud Servers DreamHost DreamHost Log Hosting