.. -- coding: utf-8 -- .. :Project: python-rapidjson -- Introduction .. :Author: Ken Robbins [email protected] .. :License: MIT License .. :Copyright: © 2015 Ken Robbins .. :Copyright: © 2016, 2017, 2018, 2020 Lele Gaifax ..

================== python-rapidjson

Python wrapper around RapidJSON

:Authors: Ken Robbins [email protected]; Lele Gaifax [email protected] :License: MIT License__ :Status: |build| |doc|

__ https://raw.githubusercontent.com/python-rapidjson/python-rapidjson/master/LICENSE .. |build| image:: https://travis-ci.org/python-rapidjson/python-rapidjson.svg?branch=master :target: https://travis-ci.org/python-rapidjson/python-rapidjson :alt: Build status .. |doc| image:: https://readthedocs.org/projects/python-rapidjson/badge/?version=latest :target: https://readthedocs.org/projects/python-rapidjson/builds/ :alt: Documentation status

RapidJSON_ is an extremely fast C++ JSON parser and serialization library: this module wraps it into a Python 3 extension, exposing its serialization/deserialization (to/from either bytes, str or file-like instances) and JSON Schema__ validation capabilities.

Latest version documentation is automatically rendered by Read the Docs__.

__ http://json-schema.org/documentation.html __ https://python-rapidjson.readthedocs.io/en/latest/

Getting Started

First install python-rapidjson:

.. code-block:: bash

$ pip install python-rapidjson

or, if you prefer Conda__:

.. code-block:: bash

$ conda install -c conda-forge python-rapidjson

__ https://conda.io/docs/

Basic usage looks like this:

.. code-block:: python

>>> import rapidjson
>>> data = {'foo': 100, 'bar': 'baz'}
>>> rapidjson.dumps(data)
'{"bar":"baz","foo":100}'
>>> rapidjson.loads('{"bar":"baz","foo":100}')
{'bar': 'baz', 'foo': 100}
>>>
>>> class Stream:
...   def write(self, data):
...      print("Chunk:", data)
...
>>> rapidjson.dump(data, Stream(), chunk_size=5)
Chunk: b'{"foo'
Chunk: b'":100'
Chunk: b',"bar'
Chunk: b'":"ba'
Chunk: b'z"}'

Development

If you want to install the development version (maybe to contribute fixes or enhancements) you may clone the repository:

.. code-block:: bash

$ git clone --recursive https://github.com/python-rapidjson/python-rapidjson.git

.. note:: The --recursive option is needed because we use a submodule to include RapidJSON_ sources. Alternatively you can do a plain clone immediately followed by a git submodule update --init.

      Alternatively, if you already have (a *compatible* version of)
      RapidJSON includes around, you can compile the module specifying
      their location with the option ``--rj-include-dir``, for example:

      .. code-block:: shell

         $ python3 setup.py build --rj-include-dir=/usr/include/rapidjson

A set of makefiles implement most common operations, such as build, check and release; see make help output for a list of available targets.

Performance

python-rapidjson tries to be as performant as possible while staying compatible with the json module.

See the this section__ in the documentation for a comparison with other JSON libraries.

__ https://python-rapidjson.readthedocs.io/en/latest/benchmarks.html

Incompatibility

Although we tried to implement an API similar to the standard library json, being a strict drop-in replacement in not our goal and we have decided to depart from there in some aspects. See this section__ in the documentation for further details.

__ https://python-rapidjson.readthedocs.io/en/latest/quickstart.html#incompatibilities

.. _RapidJSON: http://rapidjson.org/