simplejson is a simple, fast, complete, correct and extensible JSON http://json.org encoder and decoder for Python 3.3+ with legacy support for Python 2.5+. It is pure Python code with no dependencies, but includes an optional C extension for a serious speed boost.
The latest documentation for simplejson can be read online here: https://simplejson.readthedocs.io/
simplejson is the externally maintained development version of the json library included with Python (since 2.6). This version is tested with the latest Python 3.8 and maintains backwards compatibility with Python 3.3+ and the legacy Python 2.5 - Python 2.7 releases.
The encoder can be specialized to provide serialization in any kind of
situation, without any special support by the objects to be serialized
(somewhat like pickle). This is best done with the default kwarg
to dumps.
The decoder can handle incoming JSON strings of any specified encoding
(UTF-8 by default). It can also be specialized to post-process JSON
objects with the object_hook or object_pairs_hook kwargs. This
is particularly useful for implementing protocols such as JSON-RPC
that have a richer type system than JSON itself.
For those of you that have legacy systems to maintain, there is a
very old fork of simplejson in the python2.2_ branch that supports
Python 2.2. This is based on a very old version of simplejson,
is not maintained, and should only be used as a last resort.
.. _python2.2: https://github.com/simplejson/simplejson/tree/python2.2
FAQs
Simple, fast, extensible JSON encoder/decoder for Python
We found that simplejson demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 3 open source maintainers collaborating on the project.
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