cysimdjson - Very fast Python JSON parsing library

Last update: Dec 29, 2022

Related tags

Overview

cysimdjson

Fast JSON parsing library for Python, 7-12 times faster than standard Python JSON parser.
It is Python bindings for the simdjson using Cython.

Standard Python JSON parser (json.load() etc.) is relatively slow, and if you need to parse large JSON files or a large number of small JSON files, it may represent a significant bottleneck.

Whilst there are other fast Python JSON parsers, such as pysimdjson, libpy_simdjson or orjson, they don't reach the raw speed that is provided by the brilliant SIMDJSON project. SIMDJSON is C++ JSON parser based on SIMD instructions, reportedly the fastest JSON parser on the planet.

Usage

import cysimdjson

json_bytes = b'''
{
  "foo": [1,2,[3]]
}
'''

parser = cysimdjson.JSONParser()
json_parsed = parser.parse(json_bytes)

# Standard Python access
print(json_parsed['foo'][2][0])

# Access using JSON Pointer (faster)
print(json_parsed.at_pointer("/foo/2/0"))

Note: parser object can be reused for maximum performance.

The json_parsed is a read-only dictionary-like object, that provides an access to JSON data.

Installation

pip3 install cython
pip3 install git+https://github.com/TeskaLabs/cysimdjson.git

Note: cysimdjson will be released to pypi shortly.

Performance

----------------------------------------------------------------
# 'jsonexamples/test.json' 2397 bytes
----------------------------------------------------------------
* cysimdjson parse          510291.81 EPS (  1.00)  1223.17 MB/s
* libpy_simdjson loads      374615.54 EPS (  1.36)   897.95 MB/s
* pysimdjson parse          362195.46 EPS (  1.41)   868.18 MB/s
* orjson loads              110615.70 EPS (  4.61)   265.15 MB/s
* python json loads          72096.80 EPS (  7.08)   172.82 MB/s
----------------------------------------------------------------

SIMDJSON: 543335.93 EPS, 1241.52 MB/s

----------------------------------------------------------------
# 'jsonexamples/twitter.json' 631515 bytes
----------------------------------------------------------------
* cysimdjson parse            2556.10 EPS (  1.00)  1614.22 MB/s
* libpy_simdjson loads        2444.53 EPS (  1.05)  1543.76 MB/s
* pysimdjson parse            2415.46 EPS (  1.06)  1525.40 MB/s
* orjson loads                 387.11 EPS (  6.60)   244.47 MB/s
* python json loads            278.63 EPS (  9.17)   175.96 MB/s
----------------------------------------------------------------

SIMDJSON: 2536.16 EPS,  1527.28 MB/s

----------------------------------------------------------------
# 'jsonexamples/canada.json' 2251051 bytes
----------------------------------------------------------------
* cysimdjson parse             284.67 EPS (  1.00)   640.81 MB/s
* pysimdjson parse             284.62 EPS (  1.00)   640.70 MB/s
* libpy_simdjson loads         277.13 EPS (  1.03)   623.84 MB/s
* orjson loads                  81.80 EPS (  3.48)   184.13 MB/s
* python json loads             22.52 EPS ( 12.64)    50.68 MB/s
----------------------------------------------------------------

SIMDJSON: 307.95 EPS, 661.08 MB/s

----------------------------------------------------------------
# 'jsonexamples/gsoc-2018.json' 3327831 bytes
----------------------------------------------------------------
* cysimdjson parse             775.61 EPS (  1.00)  2581.09 MB/s
* pysimdjson parse             743.67 EPS (  1.04)  2474.81 MB/s
* libpy_simdjson loads         654.15 EPS (  1.19)  2176.88 MB/s
* orjson loads                 166.67 EPS (  4.65)   554.66 MB/s
* python json loads            113.72 EPS (  6.82)   378.43 MB/s
----------------------------------------------------------------

SIMDJSON: 703.59 EPS, 2232.92 MB/s

----------------------------------------------------------------
# 'jsonexamples/verysmall.json' 7 bytes
----------------------------------------------------------------
* cysimdjson parse         3972376.53 EPS (  1.00)    27.81 MB/s
* orjson loads             3637369.63 EPS (  1.09)    25.46 MB/s
* libpy_simdjson loads     1774211.19 EPS (  2.24)    12.42 MB/s
* pysimdjson parse          977530.90 EPS (  4.06)     6.84 MB/s
* python json loads         527932.65 EPS (  7.52)     3.70 MB/s
----------------------------------------------------------------

SIMDJSON: 3799392.10 EPS

CPU: AMD EPYC 7452

More performance testing:

Apple M1: > 1M EPS, > 3GB/s

Tests are reproducible

pip3 install orjson
pip3 install pysimdjson
pip3 install libpy_simdjson
python3 setup.py build_ext --inplace
PYTHONPATH=. python3 ./test/test_benchmark.py

Manual build

python3 setup.py build_ext --inplace

Comments

’" error when trying to install with PIP">

Get " ambiguous template specialization ‘get<>’" error when trying to install with PIP

This is on CentOS 7 with gcc 7.3.0 trying to install for Python 3.10. Is the latter maybe not supported yet?

Here is the entire PIP error trace:

Collecting cysimdjson
  Using cached cysimdjson-21.4a4.tar.gz (370 kB)
  Installing build dependencies ... done
  Getting requirements to build wheel ... done
    Preparing wheel metadata ... done
Building wheels for collected packages: cysimdjson
  Building wheel for cysimdjson (PEP 517) ... error
  ERROR: Command errored out with exit status 1:
   command: /usr/local/bin/python3.10 /usr/local/lib/python3.10/site-packages/pip/_vendor/pep517/in_process/_in_process.py build_wheel /tmp/tmp1cpu0ci3
       cwd: /tmp/pip-install-7c4qotgp/cysimdjson_9b536c74e59e4472990b6003d8d6d3e9
  Complete output (263 lines):
  /tmp/pip-build-env-tzj3aepc/overlay/lib/python3.10/site-packages/setuptools/dist.py:487: UserWarning: Normalizing '21.4-a4' to '21.4a4'
    warnings.warn(tmpl.format(**locals()))
  running bdist_wheel
  running build
  running build_py
  package init file 'cysimdjson/__init__.py' not found (or not a regular file)
  running build_ext
  building 'cysimdjson' extension
  creating build
  creating build/temp.linux-x86_64-3.10
  creating build/temp.linux-x86_64-3.10/cysimdjson
  creating build/temp.linux-x86_64-3.10/cysimdjson/pysimdjson
  creating build/temp.linux-x86_64-3.10/cysimdjson/simdjson
  /usr/local/bin/gcc -Wno-unused-result -Wsign-compare -DNDEBUG -g -fwrapv -O3 -Wall -fPIC -Icysimdjson -I/usr/local/include/python3.10 -c cysimdjson/cysimdjson.cpp -o build/temp.linux-x86_64-3.10/cysimdjson/cysimdjson.o -std=c++17 -O3
  In file included from cysimdjson/pysimdjson/errors.h:3:0,
                   from cysimdjson/cysimdjson.cpp:668:
  cysimdjson/pysimdjson/../simdjson/simdjson.h:6262:38: warning: ‘Iterator’ is deprecated [-Wdeprecated-declarations]
     inline Iterator(const Iterator &o) noexcept;
                                        ^~~~~~~~
  cysimdjson/pysimdjson/../simdjson/simdjson.h:6265:49: warning: ‘Iterator’ is deprecated: Use the new DOM navigation API instead (see doc/basics.md) [-Wdeprecated-declarations]
     inline Iterator& operator=(const Iterator&) = delete;
                                                   ^~~~~~
  cysimdjson/pysimdjson/../simdjson/simdjson.h:6259:97: note: declared here
   class [[deprecated("Use the new DOM navigation API instead (see doc/basics.md)")]] dom::parser::Iterator {
                                                                                                   ^~~~~~~~
  cysimdjson/pysimdjson/../simdjson/simdjson.h:6265:49: warning: ‘Iterator’ is deprecated [-Wdeprecated-declarations]
     inline Iterator& operator=(const Iterator&) = delete;
                                                   ^~~~~~
  In file included from cysimdjson/pysimdjson/errors.h:3:0,
                   from cysimdjson/cysimdjson.cpp:668:
  cysimdjson/pysimdjson/../simdjson/simdjson.h:22965:58: error: ambiguous template specialization ‘get<>’ for ‘simdjson::simdjson_result<simdjson::fallback::ondemand::array> simdjson::fallback::ondemand::document::get() &’
   template<> simdjson_really_inline simdjson_result<array> document::get() & noexcept { return get_array(); }
                                                            ^~~~~~~~
  In file included from cysimdjson/pysimdjson/errors.h:3:0,
                   from cysimdjson/cysimdjson.cpp:668:
  cysimdjson/pysimdjson/../simdjson/simdjson.h:20099:66: note: candidates are: template<class T> simdjson::simdjson_result<T> simdjson::fallback::ondemand::document::get() &
     template<typename T> simdjson_really_inline simdjson_result<T> get() & noexcept {
                                                                    ^~~
  cysimdjson/pysimdjson/../simdjson/simdjson.h:20105:66: note:                 template<class T> simdjson::simdjson_result<T> simdjson::fallback::ondemand::document::get() &&
     template<typename T> simdjson_really_inline simdjson_result<T> get() && noexcept {
                                                                    ^~~
  In file included from cysimdjson/pysimdjson/errors.h:3:0,
                   from cysimdjson/cysimdjson.cpp:668:
  cysimdjson/pysimdjson/../simdjson/simdjson.h:22966:59: error: ambiguous template specialization ‘get<>’ for ‘simdjson::simdjson_result<simdjson::fallback::ondemand::object> simdjson::fallback::ondemand::document::get() &’
   template<> simdjson_really_inline simdjson_result<object> document::get() & noexcept { return get_object(); }
                                                             ^~~~~~~~
  In file included from cysimdjson/pysimdjson/errors.h:3:0,
                   from cysimdjson/cysimdjson.cpp:668:
  cysimdjson/pysimdjson/../simdjson/simdjson.h:20099:66: note: candidates are: template<class T> simdjson::simdjson_result<T> simdjson::fallback::ondemand::document::get() &
     template<typename T> simdjson_really_inline simdjson_result<T> get() & noexcept {
                                                                    ^~~
  cysimdjson/pysimdjson/../simdjson/simdjson.h:20105:66: note:                 template<class T> simdjson::simdjson_result<T> simdjson::fallback::ondemand::document::get() &&
     template<typename T> simdjson_really_inline simdjson_result<T> get() && noexcept {
                                                                    ^~~
  In file included from cysimdjson/pysimdjson/errors.h:3:0,
                   from cysimdjson/cysimdjson.cpp:668:
  cysimdjson/pysimdjson/../simdjson/simdjson.h:22967:68: error: ambiguous template specialization ‘get<>’ for ‘simdjson::simdjson_result<simdjson::fallback::ondemand::raw_json_string> simdjson::fallback::ondemand::document::get() &’
   template<> simdjson_really_inline simdjson_result<raw_json_string> document::get() & noexcept { return get_raw_json_string(); }
                                                                      ^~~~~~~~
  In file included from cysimdjson/pysimdjson/errors.h:3:0,
                   from cysimdjson/cysimdjson.cpp:668:
  cysimdjson/pysimdjson/../simdjson/simdjson.h:20099:66: note: candidates are: template<class T> simdjson::simdjson_result<T> simdjson::fallback::ondemand::document::get() &
     template<typename T> simdjson_really_inline simdjson_result<T> get() & noexcept {
                                                                    ^~~
  cysimdjson/pysimdjson/../simdjson/simdjson.h:20105:66: note:                 template<class T> simdjson::simdjson_result<T> simdjson::fallback::ondemand::document::get() &&
     template<typename T> simdjson_really_inline simdjson_result<T> get() && noexcept {
                                                                    ^~~
  In file included from cysimdjson/pysimdjson/errors.h:3:0,
                   from cysimdjson/cysimdjson.cpp:668:
  cysimdjson/pysimdjson/../simdjson/simdjson.h:22968:69: error: ambiguous template specialization ‘get<>’ for ‘simdjson::simdjson_result<std::basic_string_view<char> > simdjson::fallback::ondemand::document::get() &’
   template<> simdjson_really_inline simdjson_result<std::string_view> document::get() & noexcept { return get_string(); }
                                                                       ^~~~~~~~
  In file included from cysimdjson/pysimdjson/errors.h:3:0,
                   from cysimdjson/cysimdjson.cpp:668:
  cysimdjson/pysimdjson/../simdjson/simdjson.h:20099:66: note: candidates are: template<class T> simdjson::simdjson_result<T> simdjson::fallback::ondemand::document::get() &
     template<typename T> simdjson_really_inline simdjson_result<T> get() & noexcept {
                                                                    ^~~
  cysimdjson/pysimdjson/../simdjson/simdjson.h:20105:66: note:                 template<class T> simdjson::simdjson_result<T> simdjson::fallback::ondemand::document::get() &&
     template<typename T> simdjson_really_inline simdjson_result<T> get() && noexcept {
                                                                    ^~~
  In file included from cysimdjson/pysimdjson/errors.h:3:0,
                   from cysimdjson/cysimdjson.cpp:668:
  cysimdjson/pysimdjson/../simdjson/simdjson.h:22969:59: error: ambiguous template specialization ‘get<>’ for ‘simdjson::simdjson_result<double> simdjson::fallback::ondemand::document::get() &’
   template<> simdjson_really_inline simdjson_result<double> document::get() & noexcept { return get_double(); }
                                                             ^~~~~~~~
  In file included from cysimdjson/pysimdjson/errors.h:3:0,
                   from cysimdjson/cysimdjson.cpp:668:
  cysimdjson/pysimdjson/../simdjson/simdjson.h:20099:66: note: candidates are: template<class T> simdjson::simdjson_result<T> simdjson::fallback::ondemand::document::get() &
     template<typename T> simdjson_really_inline simdjson_result<T> get() & noexcept {
                                                                    ^~~
  cysimdjson/pysimdjson/../simdjson/simdjson.h:20105:66: note:                 template<class T> simdjson::simdjson_result<T> simdjson::fallback::ondemand::document::get() &&
     template<typename T> simdjson_really_inline simdjson_result<T> get() && noexcept {
                                                                    ^~~
  In file included from cysimdjson/pysimdjson/errors.h:3:0,
                   from cysimdjson/cysimdjson.cpp:668:
  cysimdjson/pysimdjson/../simdjson/simdjson.h:22970:61: error: ambiguous template specialization ‘get<>’ for ‘simdjson::simdjson_result<long unsigned int> simdjson::fallback::ondemand::document::get() &’
   template<> simdjson_really_inline simdjson_result<uint64_t> document::get() & noexcept { return get_uint64(); }
                                                               ^~~~~~~~
  In file included from cysimdjson/pysimdjson/errors.h:3:0,
                   from cysimdjson/cysimdjson.cpp:668:
  cysimdjson/pysimdjson/../simdjson/simdjson.h:20099:66: note: candidates are: template<class T> simdjson::simdjson_result<T> simdjson::fallback::ondemand::document::get() &
     template<typename T> simdjson_really_inline simdjson_result<T> get() & noexcept {
                                                                    ^~~
  cysimdjson/pysimdjson/../simdjson/simdjson.h:20105:66: note:                 template<class T> simdjson::simdjson_result<T> simdjson::fallback::ondemand::document::get() &&
     template<typename T> simdjson_really_inline simdjson_result<T> get() && noexcept {
                                                                    ^~~
  In file included from cysimdjson/pysimdjson/errors.h:3:0,
                   from cysimdjson/cysimdjson.cpp:668:
  cysimdjson/pysimdjson/../simdjson/simdjson.h:22971:60: error: ambiguous template specialization ‘get<>’ for ‘simdjson::simdjson_result<long int> simdjson::fallback::ondemand::document::get() &’
   template<> simdjson_really_inline simdjson_result<int64_t> document::get() & noexcept { return get_int64(); }
                                                              ^~~~~~~~
  In file included from cysimdjson/pysimdjson/errors.h:3:0,
                   from cysimdjson/cysimdjson.cpp:668:
  cysimdjson/pysimdjson/../simdjson/simdjson.h:20099:66: note: candidates are: template<class T> simdjson::simdjson_result<T> simdjson::fallback::ondemand::document::get() &
     template<typename T> simdjson_really_inline simdjson_result<T> get() & noexcept {
                                                                    ^~~
  cysimdjson/pysimdjson/../simdjson/simdjson.h:20105:66: note:                 template<class T> simdjson::simdjson_result<T> simdjson::fallback::ondemand::document::get() &&
     template<typename T> simdjson_really_inline simdjson_result<T> get() && noexcept {
                                                                    ^~~
  In file included from cysimdjson/pysimdjson/errors.h:3:0,
                   from cysimdjson/cysimdjson.cpp:668:
  cysimdjson/pysimdjson/../simdjson/simdjson.h:22972:57: error: ambiguous template specialization ‘get<>’ for ‘simdjson::simdjson_result<bool> simdjson::fallback::ondemand::document::get() &’
   template<> simdjson_really_inline simdjson_result<bool> document::get() & noexcept { return get_bool(); }
                                                           ^~~~~~~~
  In file included from cysimdjson/pysimdjson/errors.h:3:0,
                   from cysimdjson/cysimdjson.cpp:668:
  cysimdjson/pysimdjson/../simdjson/simdjson.h:20099:66: note: candidates are: template<class T> simdjson::simdjson_result<T> simdjson::fallback::ondemand::document::get() &
     template<typename T> simdjson_really_inline simdjson_result<T> get() & noexcept {
                                                                    ^~~
  cysimdjson/pysimdjson/../simdjson/simdjson.h:20105:66: note:                 template<class T> simdjson::simdjson_result<T> simdjson::fallback::ondemand::document::get() &&
     template<typename T> simdjson_really_inline simdjson_result<T> get() && noexcept {
                                                                    ^~~
  In file included from cysimdjson/pysimdjson/errors.h:3:0,
                   from cysimdjson/cysimdjson.cpp:668:
  cysimdjson/pysimdjson/../simdjson/simdjson.h:22974:68: error: ambiguous template specialization ‘get<>’ for ‘simdjson::simdjson_result<simdjson::fallback::ondemand::raw_json_string> simdjson::fallback::ondemand::document::get() &&’
   template<> simdjson_really_inline simdjson_result<raw_json_string> document::get() && noexcept { return get_raw_json_string(); }
                                                                      ^~~~~~~~
  In file included from cysimdjson/pysimdjson/errors.h:3:0,
                   from cysimdjson/cysimdjson.cpp:668:
  cysimdjson/pysimdjson/../simdjson/simdjson.h:20099:66: note: candidates are: template<class T> simdjson::simdjson_result<T> simdjson::fallback::ondemand::document::get() &
     template<typename T> simdjson_really_inline simdjson_result<T> get() & noexcept {
                                                                    ^~~
  cysimdjson/pysimdjson/../simdjson/simdjson.h:20105:66: note:                 template<class T> simdjson::simdjson_result<T> simdjson::fallback::ondemand::document::get() &&
     template<typename T> simdjson_really_inline simdjson_result<T> get() && noexcept {
                                                                    ^~~
  In file included from cysimdjson/pysimdjson/errors.h:3:0,
                   from cysimdjson/cysimdjson.cpp:668:
  cysimdjson/pysimdjson/../simdjson/simdjson.h:22975:69: error: ambiguous template specialization ‘get<>’ for ‘simdjson::simdjson_result<std::basic_string_view<char> > simdjson::fallback::ondemand::document::get() &&’
   template<> simdjson_really_inline simdjson_result<std::string_view> document::get() && noexcept { return get_string(); }
                                                                       ^~~~~~~~
  In file included from cysimdjson/pysimdjson/errors.h:3:0,
                   from cysimdjson/cysimdjson.cpp:668:
  cysimdjson/pysimdjson/../simdjson/simdjson.h:20099:66: note: candidates are: template<class T> simdjson::simdjson_result<T> simdjson::fallback::ondemand::document::get() &
     template<typename T> simdjson_really_inline simdjson_result<T> get() & noexcept {
                                                                    ^~~
  cysimdjson/pysimdjson/../simdjson/simdjson.h:20105:66: note:                 template<class T> simdjson::simdjson_result<T> simdjson::fallback::ondemand::document::get() &&
     template<typename T> simdjson_really_inline simdjson_result<T> get() && noexcept {
                                                                    ^~~
  In file included from cysimdjson/pysimdjson/errors.h:3:0,
                   from cysimdjson/cysimdjson.cpp:668:
  cysimdjson/pysimdjson/../simdjson/simdjson.h:22976:59: error: ambiguous template specialization ‘get<>’ for ‘simdjson::simdjson_result<double> simdjson::fallback::ondemand::document::get() &&’
   template<> simdjson_really_inline simdjson_result<double> document::get() && noexcept { return std::forward<document>(*this).get_double(); }
                                                             ^~~~~~~~
  In file included from cysimdjson/pysimdjson/errors.h:3:0,
                   from cysimdjson/cysimdjson.cpp:668:
  cysimdjson/pysimdjson/../simdjson/simdjson.h:20099:66: note: candidates are: template<class T> simdjson::simdjson_result<T> simdjson::fallback::ondemand::document::get() &
     template<typename T> simdjson_really_inline simdjson_result<T> get() & noexcept {
                                                                    ^~~
  cysimdjson/pysimdjson/../simdjson/simdjson.h:20105:66: note:                 template<class T> simdjson::simdjson_result<T> simdjson::fallback::ondemand::document::get() &&
     template<typename T> simdjson_really_inline simdjson_result<T> get() && noexcept {
                                                                    ^~~
  In file included from cysimdjson/pysimdjson/errors.h:3:0,
                   from cysimdjson/cysimdjson.cpp:668:
  cysimdjson/pysimdjson/../simdjson/simdjson.h:22977:61: error: ambiguous template specialization ‘get<>’ for ‘simdjson::simdjson_result<long unsigned int> simdjson::fallback::ondemand::document::get() &&’
   template<> simdjson_really_inline simdjson_result<uint64_t> document::get() && noexcept { return std::forward<document>(*this).get_uint64(); }
                                                               ^~~~~~~~
  In file included from cysimdjson/pysimdjson/errors.h:3:0,
                   from cysimdjson/cysimdjson.cpp:668:
  cysimdjson/pysimdjson/../simdjson/simdjson.h:20099:66: note: candidates are: template<class T> simdjson::simdjson_result<T> simdjson::fallback::ondemand::document::get() &
     template<typename T> simdjson_really_inline simdjson_result<T> get() & noexcept {
                                                                    ^~~
  cysimdjson/pysimdjson/../simdjson/simdjson.h:20105:66: note:                 template<class T> simdjson::simdjson_result<T> simdjson::fallback::ondemand::document::get() &&
     template<typename T> simdjson_really_inline simdjson_result<T> get() && noexcept {
                                                                    ^~~
  In file included from cysimdjson/pysimdjson/errors.h:3:0,
                   from cysimdjson/cysimdjson.cpp:668:
  cysimdjson/pysimdjson/../simdjson/simdjson.h:22978:60: error: ambiguous template specialization ‘get<>’ for ‘simdjson::simdjson_result<long int> simdjson::fallback::ondemand::document::get() &&’
   template<> simdjson_really_inline simdjson_result<int64_t> document::get() && noexcept { return std::forward<document>(*this).get_int64(); }
                                                              ^~~~~~~~
  In file included from cysimdjson/pysimdjson/errors.h:3:0,
                   from cysimdjson/cysimdjson.cpp:668:
  cysimdjson/pysimdjson/../simdjson/simdjson.h:20099:66: note: candidates are: template<class T> simdjson::simdjson_result<T> simdjson::fallback::ondemand::document::get() &
     template<typename T> simdjson_really_inline simdjson_result<T> get() & noexcept {
                                                                    ^~~
  cysimdjson/pysimdjson/../simdjson/simdjson.h:20105:66: note:                 template<class T> simdjson::simdjson_result<T> simdjson::fallback::ondemand::document::get() &&
     template<typename T> simdjson_really_inline simdjson_result<T> get() && noexcept {
                                                                    ^~~
  In file included from cysimdjson/pysimdjson/errors.h:3:0,
                   from cysimdjson/cysimdjson.cpp:668:
  cysimdjson/pysimdjson/../simdjson/simdjson.h:22979:57: error: ambiguous template specialization ‘get<>’ for ‘simdjson::simdjson_result<bool> simdjson::fallback::ondemand::document::get() &&’
   template<> simdjson_really_inline simdjson_result<bool> document::get() && noexcept { return std::forward<document>(*this).get_bool(); }
                                                           ^~~~~~~~
  In file included from cysimdjson/pysimdjson/errors.h:3:0,
                   from cysimdjson/cysimdjson.cpp:668:
  cysimdjson/pysimdjson/../simdjson/simdjson.h:20099:66: note: candidates are: template<class T> simdjson::simdjson_result<T> simdjson::fallback::ondemand::document::get() &
     template<typename T> simdjson_really_inline simdjson_result<T> get() & noexcept {
                                                                    ^~~
  cysimdjson/pysimdjson/../simdjson/simdjson.h:20105:66: note:                 template<class T> simdjson::simdjson_result<T> simdjson::fallback::ondemand::document::get() &&
     template<typename T> simdjson_really_inline simdjson_result<T> get() && noexcept {
                                                                    ^~~
  In file included from cysimdjson/pysimdjson/errors.h:3:0,
                   from cysimdjson/cysimdjson.cpp:668:
  cysimdjson/pysimdjson/../simdjson/simdjson.h:23146:104: error: ambiguous template specialization ‘get<simdjson::fallback::ondemand::document>’ for ‘simdjson::simdjson_result<simdjson::fallback::ondemand::document> simdjson::simdjson_result<simdjson::fallback::ondemand::document>::get() &’
   template<> simdjson_really_inline simdjson_result<SIMDJSON_BUILTIN_IMPLEMENTATION::ondemand::document> simdjson_result<SIMDJSON_BUILTIN_IMPLEMENTATION::ondemand::document>::get<SIMDJSON_BUILTIN_IMPLEMENTATION::ondemand::document>() & noexcept = delete;
                                                                                                          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  In file included from cysimdjson/pysimdjson/errors.h:3:0,
                   from cysimdjson/cysimdjson.cpp:668:
  cysimdjson/pysimdjson/../simdjson/simdjson.h:20335:66: note: candidates are: template<class T> simdjson::simdjson_result<T> simdjson::simdjson_result<simdjson::fallback::ondemand::document>::get() &
     template<typename T> simdjson_really_inline simdjson_result<T> get() & noexcept;
                                                                    ^~~
  cysimdjson/pysimdjson/../simdjson/simdjson.h:20336:66: note:                 template<class T> simdjson::simdjson_result<T> simdjson::simdjson_result<simdjson::fallback::ondemand::document>::get() &&
     template<typename T> simdjson_really_inline simdjson_result<T> get() && noexcept;
                                                                    ^~~
  In file included from cysimdjson/pysimdjson/errors.h:3:0,
                   from cysimdjson/cysimdjson.cpp:668:
  cysimdjson/pysimdjson/../simdjson/simdjson.h:23147:104: error: ambiguous template specialization ‘get<simdjson::fallback::ondemand::document>’ for ‘simdjson::simdjson_result<simdjson::fallback::ondemand::document> simdjson::simdjson_result<simdjson::fallback::ondemand::document>::get() &&’
   template<> simdjson_really_inline simdjson_result<SIMDJSON_BUILTIN_IMPLEMENTATION::ondemand::document> simdjson_result<SIMDJSON_BUILTIN_IMPLEMENTATION::ondemand::document>::get<SIMDJSON_BUILTIN_IMPLEMENTATION::ondemand::document>() && noexcept {
                                                                                                          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  In file included from cysimdjson/pysimdjson/errors.h:3:0,
                   from cysimdjson/cysimdjson.cpp:668:
  cysimdjson/pysimdjson/../simdjson/simdjson.h:20335:66: note: candidates are: template<class T> simdjson::simdjson_result<T> simdjson::simdjson_result<simdjson::fallback::ondemand::document>::get() &
     template<typename T> simdjson_really_inline simdjson_result<T> get() & noexcept;
                                                                    ^~~
  cysimdjson/pysimdjson/../simdjson/simdjson.h:20336:66: note:                 template<class T> simdjson::simdjson_result<T> simdjson::simdjson_result<simdjson::fallback::ondemand::document>::get() &&
     template<typename T> simdjson_really_inline simdjson_result<T> get() && noexcept;
                                                                    ^~~
  In file included from cysimdjson/pysimdjson/errors.h:3:0,
                   from cysimdjson/cysimdjson.cpp:668:
  cysimdjson/pysimdjson/../simdjson/simdjson.h:23151:46: error: ambiguous template specialization ‘get<simdjson::fallback::ondemand::document>’ for ‘simdjson::error_code simdjson::simdjson_result<simdjson::fallback::ondemand::document>::get(simdjson::fallback::ondemand::document&) &’
   template<> simdjson_really_inline error_code simdjson_result<SIMDJSON_BUILTIN_IMPLEMENTATION::ondemand::document>::get<SIMDJSON_BUILTIN_IMPLEMENTATION::ondemand::document>(SIMDJSON_BUILTIN_IMPLEMENTATION::ondemand::document &out) & noexcept = delete;
                                                ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  In file included from cysimdjson/pysimdjson/errors.h:3:0,
                   from cysimdjson/cysimdjson.cpp:668:
  cysimdjson/pysimdjson/../simdjson/simdjson.h:20338:58: note: candidates are: template<class T> simdjson::error_code simdjson::simdjson_result<simdjson::fallback::ondemand::document>::get(T&) &
     template<typename T> simdjson_really_inline error_code get(T &out) & noexcept;
                                                            ^~~
  cysimdjson/pysimdjson/../simdjson/simdjson.h:20339:58: note:                 template<class T> simdjson::error_code simdjson::simdjson_result<simdjson::fallback::ondemand::document>::get(T&) &&
     template<typename T> simdjson_really_inline error_code get(T &out) && noexcept;
                                                            ^~~
  In file included from cysimdjson/pysimdjson/errors.h:3:0,
                   from cysimdjson/cysimdjson.cpp:668:
  cysimdjson/pysimdjson/../simdjson/simdjson.h:23152:46: error: ambiguous template specialization ‘get<simdjson::fallback::ondemand::document>’ for ‘simdjson::error_code simdjson::simdjson_result<simdjson::fallback::ondemand::document>::get(simdjson::fallback::ondemand::document&) &&’
   template<> simdjson_really_inline error_code simdjson_result<SIMDJSON_BUILTIN_IMPLEMENTATION::ondemand::document>::get<SIMDJSON_BUILTIN_IMPLEMENTATION::ondemand::document>(SIMDJSON_BUILTIN_IMPLEMENTATION::ondemand::document &out) && noexcept {
                                                ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  In file included from cysimdjson/pysimdjson/errors.h:3:0,
                   from cysimdjson/cysimdjson.cpp:668:
  cysimdjson/pysimdjson/../simdjson/simdjson.h:20338:58: note: candidates are: template<class T> simdjson::error_code simdjson::simdjson_result<simdjson::fallback::ondemand::document>::get(T&) &
     template<typename T> simdjson_really_inline error_code get(T &out) & noexcept;
                                                            ^~~
  cysimdjson/pysimdjson/../simdjson/simdjson.h:20339:58: note:                 template<class T> simdjson::error_code simdjson::simdjson_result<simdjson::fallback::ondemand::document>::get(T&) &&
     template<typename T> simdjson_really_inline error_code get(T &out) && noexcept;
                                                            ^~~
  error: command '/usr/local/bin/gcc' failed with exit code 1
  ----------------------------------------
  ERROR: Failed building wheel for cysimdjson
Failed to build cysimdjson
ERROR: Could not build wheels for cysimdjson which use PEP 517 and cannot be installed directly

opened by quaxquax 7

Reusing parser modifies previous results

Installed via PyPI

from cysimdjson import JSONParser
parser = JSONParser()
result = parser.parse(b'{"hello": "world"}')
print(result['hello'])  # "world"
new_result = parser.parse(b'{"hello": "universe"}')
print(result['hello'])  # "universe"

This only happens when reusing a previous parser instance. I'm not sure whether this is by design, but if it is, it should probably be explicitly documented to avoid confusion.

It also becomes especially iffy when mixing different types:

result = parser.parse(b'{"hello": "world"}')
print(type(result))  # JSONObject
print(list(result.keys()))  # ['hello']
new_result = parser.parse(b'[1,2,3]')
print(type(result))  # JSONObject
print(type(new_result))  # JSONArray
print(list(result.keys()))  # ['hello', 'hello', 'hello']

So if it is by design, it might be worthwhile to somehow invalidate the previous reference when a new document is parsed.

question wontfix

opened by ROpdebee 4

TypeError: expected bytes, str found

Im not computer science guy (mechanical eng.), so hopefully the question is not too off. My project involves streaming millions of data (speed is very important) via websocket client delivered as string messages containing a system's operational parameters in json/dict format. One pushed message is a list (actual list in string) containing several dictionaries through which we iterate and analyse in real time. A 3 abbreviated separately pushed messages would look sth like this:

[{"t":1611064750942,"Signal003":"Q","Signal003_MODE":1,"Signal003_TARGET":11,"Signal003_NEXT":8,"Signal003_IRV":9.05,"Signal003_ONOFF":9.06,"Signal003_TEMP":5,"Signal001_PRES":98, ,"Signal001_ENT":3}]
[{"t":1611064750943,"Signal033":"T","Signal003_MODE":1,"Signal003_TARGET":5170,"Signal001_ONOFF":19,"Signal001_TEMP":91.28,"s":6445,"Signal033_IRV":[12],"Signal003_ENT":3},{"Signal003":"T","Signal003_MODE":2,"Signal003_TARGET":5171,"Signal001_ONOFF":8,"Signal001_TEMP":9.04,"s":100,"Signal033_IRV":[12],"t":1611064750943,"Signal003_ENT":3}]
[{"t":1611064750943,"Signal065":"T","Signal003_MODE":3,"Signal003_TARGET":5172,"Signal001_ONOFF":8,"Signal001_TEMP":9.04,"s":1000,"Signal033_IRV":[12],"Signal003_ENT":3},{"Signal003":"T","Signal003_MODE":1,"Signal003_TARGET":5173,"Signal001_ONOFF":8,"Signal001_TEMP":9.04,"s":100,"Signal033_IRV":[12],"t":1611064750943,"Signal003_ENT":3},{"Signal003":"T","Signal003_MODE":1,"Signal003_TARGET":7116,"Signal001_ONOFF":12,"Signal001_TEMP":9.04,"s":10,"Signal033_IRV":[14,12,37,41],"t":1611064750943,Signal003_ENT":3},{"Signal003":"T","Signal003_MODE":1,"Signal003_TARGET":961,"Signal001_ONOFF":19,"Signal001_TEMP":9.04,"s":4,"Signal033_IRV":[14,12,37,41],"t":1611064750943,Signal003_ENT":3},{"Signal003":"T","Signal003_MODE":1,"Signal003_TARGET":962,"Signal001_ONOFF":19,"Signal001_TEMP":9.04,"s":10,"Signal033_IRV":[14,12,37,41],"t":1611064750943,"Signal003_ENT":3}]

On your frontpage, I saw the example and if understood it correctly, the message should be in byte format, hence I understand the TypeError Im getting:

json_bytes = b'''
{
  "foo": [1,2,[3]]
}
'''

Would it be possible to parse a string message within the cysimdjson library as we have no influence on the type of the pushed message from the websocket? I hope the question is not too off, but since websockets libraries in conjunction with json formats are widely used, I was thinking the problem might be worth looking into. Also, I can imagine that one could do the string conversion somehow in python, but C speed would probably be affected. At the moment, I use orjson, which is pretty fast and working well, but looking at your results, it ignites the interest. Regardless of the answer, thank you for the efforts with the library.

opened by petric3 3

Documenting JSON pointer usage?
This seems to do what I expect...

import cysimdjson parser = cysimdjson.JSONParser() parser.parse("[1,2,[3]]".encode('utf8')).at_pointer("/2/0")

Might I suggest that it be covered, if only briefly, under the README ?
opened by lemire 3
How to convert to a dict when needed?

What is the best way to convert to a dict? I tried dict(obj) and was able to get a dict but some keys are still things like <cysimdjson.cysimdjson.JSONArray object at 0x7f523a0ff090>

Would creating a method to recursively go through the fields and convert be the best method or is there a built-in method to convert a JSON with nested fields / arrays into a dict? I understand the sacrifice in speed but we would only be doing this with JSON objects that match a specific key value within the JSON.

Thanks so much for this amazing module! It is amazingly fast.

opened by pushshift 2
Performance comparison from readme seems a bit unfair
Hi!

First of all thanks for this library! This sounds like a very good idea.

However, what I noticed is that since it evaluates fields lazily, comparing it directly to other JSON libraries that provide you with the full dictionary right away is a bit unfair.

Assuming you will use the whole dict anyway, IMHO, a more fair comparison would be with .export() call.

>>> _json_string = '{"a fairly": "expensive", "json": "goes-in", "here": 121}' >>> timeit(lambda: cysimdjson_parser.parse_string(_json_string).export(), number=100000) 3.6677306999990833 >>> timeit(lambda: orjson_parser.loads(_json_string), number=100000) 2.9754124999963096

Then however, it is slower than orjson.

It gets a lot faster if you will not use the whole dictionary.

>>> timeit(lambda: cysimdjson_parser.loads(_json_string)[7]['revisionNumber'], number=100000) 0.4328116000033333 >>> timeit(lambda: orjson_parser.loads(_json_string)[7]['revisionNumber'], number=100000) 3.0126906000004965

However, in my experience this is rarely the case.
opened by PawelTroka 2
Error when installing 21.11b2 from pypi

Hi. When i try to install latest version from pypi i get this error: ValueError: 'cysimdjson/cysimdjson.pyx' doesn't match any files Looks like cysimdjson.pyx is missing.
bug enhancement

opened by amirotin 2
Support for serializing

Hi! Does cysimdjson not support dumping/serializing a loaded JSON? I want to extract certain parts and then write them back to disk.

Thank you, Patrick

opened by pjattke 2

convert c++ exception to python on load() and parse()

This PR is meant to allow C++ exceptions raise by simdjson_parser::load and simdjson_parser::parse to be caught from Python. This can happen despite those methods being marked noexcept in the original simdjson repo.

Current behaviour

The current behaviour aborts on malformed JSON:

$ python
>>> import cysimdjson
>>> cysimdjson.JSONParser().parse(b'{"foo": null,}')
libc++abi.dylib: terminating with uncaught exception of type simdjson::simdjson_error: The JSON document has an improper structure: missing or superfluous commas, braces, missing keys, etc.
[1]    28023 abort      python
$

or on non-existent files:

$ python
>>> import cysimdjson
>>> cysimdjson.JSONParser().load(b'non_existent.json')
 libc++abi.dylib: terminating with uncaught exception of type simdjson::simdjson_error: Error reading the file.
[1]    28793 abort      python
$

New behaviour

Raises RuntimeError instead, in both cases:

>>> cysimdjson.JSONParser().parse(b'{"foo": null,}')
Traceback (most recent call last):
  File "<string>", line 1, in <module>
  File "cysimdjson/cysimdjson.pyx", line 312, in cysimdjson.JSONParser.load
    cdef simdjson_element doc = self.Parser.load(path)
RuntimeError: The JSON document has an improper structure: missing or superfluous commas, braces, missing keys, etc.
>>>

>>> cysimdjson.JSONParser().load(b'non_existent.json')
Traceback (most recent call last):
  File "<string>", line 1, in <module>
  File "cysimdjson/cysimdjson.pyx", line 312, in cysimdjson.JSONParser.load
    cdef simdjson_element doc = self.Parser.load(path)
RuntimeError: Error reading the file.
>>>

There may be other code paths needing this, but I don't have time to investigate.

Setup tested

Anaconda Python 3.7.6, MacOS.

opened by andrewdelong 2

Installation error

No matter where I try to install it, I get the following error...

$ pip3 install git+https://github.com/TeskaLabs/cysimdjson.git
çCollecting git+https://github.com/TeskaLabs/cysimdjson.git
  Cloning https://github.com/TeskaLabs/cysimdjson.git to /tmp/pip-req-build-p05qbrke
  Running command git clone -q https://github.com/TeskaLabs/cysimdjson.git /tmp/pip-req-build-p05qbrke
  Installing build dependencies ... done
  Getting requirements to build wheel ... error
  ERROR: Command errored out with exit status 1:
   command: /usr/bin/python3 /tmp/tmppry884i2 get_requires_for_build_wheel /tmp/tmpexwmoc4h
       cwd: /tmp/pip-req-build-p05qbrke
  Complete output (39 lines):
  Compiling cysimdjson/cysimdjson.pyx because it changed.
  [1/1] Cythonizing cysimdjson/cysimdjson.pyx
  running egg_info
  creating cysimdjson.egg-info
  writing cysimdjson.egg-info/PKG-INFO
  Traceback (most recent call last):
    File "/tmp/tmppry884i2", line 280, in <module>
      main()
    File "/tmp/tmppry884i2", line 263, in main
      json_out['return_val'] = hook(**hook_input['kwargs'])
    File "/tmp/tmppry884i2", line 114, in get_requires_for_build_wheel
      return hook(config_settings)
    File "/tmp/pip-build-env-ctarly3y/overlay/lib/python3.8/site-packages/setuptools/build_meta.py", line 149, in get_requires_for_build_wheel
      return self._get_build_requires(
    File "/tmp/pip-build-env-ctarly3y/overlay/lib/python3.8/site-packages/setuptools/build_meta.py", line 130, in _get_build_requires
      self.run_setup()
    File "/tmp/pip-build-env-ctarly3y/overlay/lib/python3.8/site-packages/setuptools/build_meta.py", line 253, in run_setup
      super(_BuildMetaLegacyBackend,
    File "/tmp/pip-build-env-ctarly3y/overlay/lib/python3.8/site-packages/setuptools/build_meta.py", line 145, in run_setup
      exec(compile(code, __file__, 'exec'), locals())
    File "setup.py", line 29, in <module>
      setup(
    File "/tmp/pip-build-env-ctarly3y/overlay/lib/python3.8/site-packages/setuptools/__init__.py", line 153, in setup
      return distutils.core.setup(**attrs)
    File "/usr/lib/python3.8/distutils/core.py", line 148, in setup
      dist.run_commands()
    File "/usr/lib/python3.8/distutils/dist.py", line 966, in run_commands
      self.run_command(cmd)
    File "/usr/lib/python3.8/distutils/dist.py", line 985, in run_command
      cmd_obj.run()
    File "/tmp/pip-build-env-ctarly3y/overlay/lib/python3.8/site-packages/setuptools/command/egg_info.py", line 292, in run
      writer(self, ep.name, os.path.join(self.egg_info, ep.name))
    File "/tmp/pip-build-env-ctarly3y/overlay/lib/python3.8/site-packages/setuptools/command/egg_info.py", line 628, in write_pkg_info
      metadata.write_pkg_info(cmd.egg_info)
    File "/usr/lib/python3.8/distutils/dist.py", line 1117, in write_pkg_info
      self.write_pkg_file(pkg_info)
    File "/tmp/pip-build-env-ctarly3y/overlay/lib/python3.8/site-packages/setuptools/dist.py", line 165, in write_pkg_file
      for project_url in self.project_urls.items():
  AttributeError: 'set' object has no attribute 'items'
  ----------------------------------------
ERROR: Command errored out with exit status 1: /usr/bin/python3 /tmp/tmppry884i2 get_requires_for_build_wheel /tmp/tmpexwmoc4h Check the logs for full command output.

Can be reproduced with the following container...

FROM ubuntu:20.10
 RUN apt-get update -qq
 RUN apt-get install -y vim valgrind golang llvm gdb lldb clang-format sudo pip python python-dev wget cmake g++ g++-9 git clang++-9 linux-tools-generic ruby ruby-dev python3-pip  libboost-all-dev git
 RUN  pip3 install ipython

opened by lemire 2

load to dict is slower than ujson
A big json_file convert python dict, use simdjson.Parser() Object.as_dict().It‘s load speed is slower than ujson.

python ujson loads 1.43 EPS ( 6.30) 67.02 MB/s

pysimdjson parse 1.42 EPS ( 6.36) 66.36 MB/s

python json loads 1.19 EPS ( 7.57) 55.76 MB/s

wontfix
opened by mjTree 1
Documentation for Pythonic drop-in API is wrong
parser = cysimdjson.JSONParser() json_parsed = parser.loads(json_bytes) # Access using JSON Pointer print(json_parsed.json_parsed['foo'])

passing bytes to parser.loads returns a TypeError: the param is expected to be str https://github.com/TeskaLabs/cysimdjson/blob/main/cysimdjson/cysimdjson.pyx#L454

even passing str json_parsed has no json_parsed element, like it is written in the print example

I ended up doing something like:

parser.parse(payload).get_value()

I still have to validate that's what I need :) (at the moment I'm parsing only and not accessing the object)
opened by aspacca 0

Doesn't build on Windows + MSVC

Installing cysimdjson using pip on Windows with MSVC fails.

It is due to MSVC not understanding the compiler flag -Wno-deprecated when compiling cysimdjson.cpp.

Also, MSVC won't understand -std=c++17 and will ignore the flag (and use C++11). The syntax for MSVC is /std:c++17.

Here is the relevent error log:

  building 'cysimdjson.cysimdjson' extension
  creating build\temp.win-amd64-cpython-37
  creating build\temp.win-amd64-cpython-37\Release
  creating build\temp.win-amd64-cpython-37\Release\cysimdjson
  creating build\temp.win-amd64-cpython-37\Release\cysimdjson\pysimdjson
  creating build\temp.win-amd64-cpython-37\Release\cysimdjson\simdjson
  "C:\Program Files\Microsoft Visual Studio\2022\Community\VC\Tools\MSVC\14.31.31103\bin\HostX86\x64\cl.exe" /c /nologo /O2 /W3 /GL /DNDEBUG /MD -Icysimdjson "-IC:\Program Files\Python37\include" "-IC:\Program Files\Python37\Include" "-IC:\Program Files\Microsoft Visual Studio\2022\Community\VC\Tools\MSVC\14.31.31103\ATLMFC\include" "-IC:\Program Files\Microsoft Visual Studio\2022\Community\VC\Tools\MSVC\14.31.31103\include" "-IC:\Program Files (x86)\Windows Kits\10\include\10.0.19041.0\ucrt" "-IC:\Program Files (x86)\Windows Kits\10\\include\10.0.19041.0\\shared" "-IC:\Program Files (x86)\Windows Kits\10\\include\10.0.19041.0\\um" "-IC:\Program Files (x86)\Windows Kits\10\\include\10.0.19041.0\\winrt" "-IC:\Program Files (x86)\Windows Kits\10\\include\10.0.19041.0\\cppwinrt" /EHsc /Tpcysimdjson/cysimdjson.cpp /Fobuild\temp.win-amd64-cpython-37\Release\cysimdjson/cysimdjson.obj -std=c++17 -Wno-deprecated
  cl : command line error D8021 : Invalid numeric argument '/Wno-deprecated'
  error: command 'C:\\Program Files\\Microsoft Visual Studio\\2022\\Community\\VC\\Tools\\MSVC\\14.31.31103\\bin\\HostX86\\x64\\cl.exe' failed with exit code 2
  ----------------------------------------
  ERROR: Failed building wheel for cysimdjson

opened by quartzsaber 2

Segfault when installed from pip

$ pip3 install --user cysimdjson
Collecting cysimdjson
  Downloading cysimdjson-21.11-cp39-cp39-manylinux_2_17_x86_64.manylinux2014_x86_64.whl (1.5 MB)
     |████████████████████████████████| 1.5 MB 1.3 MB/s
Installing collected packages: cysimdjson
Successfully installed cysimdjson-21.11
$ python3 convert-pa-json.py infile.geojson
ID,Name,Polygon
Segmentation fault (core dumped)

opened by dmig 1

implement JSONObject.get()

Implementing method get() of JSONObject would make a better dict compatibility.

I'm using this library to import a large GeoJSON. Trying to feed geometry object directly to shapely library gives an exception:

Traceback (most recent call last):
  File "workspace/convert-pa-json.py", line 18, in <module>
    polygon = geometry.shape(feat['geometry']['coordinates'])
  File ".local/lib/python3.9/site-packages/shapely/geometry/geo.py", line 102, in shape
    geom_type = ob.get("type").lower()
AttributeError: 'cysimdjson.JSONArray' object has no attribute 'get'

opened by dmig 0

Doesn't work on windows

Hi! There is no sys.getdlopenflags on winows, so entire package won't work here. https://github.com/TeskaLabs/cysimdjson/blob/3515a3a345f0d4c748a79042928257f25197a3fb/cysimdjson/init.py#L7

Better to add check for platform, something like sys.platform != 'win32'
bug good first issue

opened by amirotin 1

Releases(21.11)

21.11(Mar 22, 2022)

A switch from beta into production.
Source code(tar.gz)
Source code(zip)
21.11-beta(Nov 5, 2021)
The beta release after cycle of the internal stabilisation.

What's Changed

Introduce a parser from string. by @ateska in https://github.com/TeskaLabs/cysimdjson/pull/16

Add export-to-Python methods and dict-like .get() by @ateska in https://github.com/TeskaLabs/cysimdjson/pull/18

Upgrade to SIMDJSON v0.9.6 by @ateska in https://github.com/TeskaLabs/cysimdjson/pull/19

Add a C API by @ateska in https://github.com/TeskaLabs/cysimdjson/pull/20

Significant refactoring that changes the approach to the "element". by @ateska in https://github.com/TeskaLabs/cysimdjson/pull/21

Full Changelog: https://github.com/TeskaLabs/cysimdjson/compare/21.4-alpha...21.11-beta
Source code(tar.gz)
Source code(zip)
21.4-alpha(Apr 7, 2021)

Initial alpha release.
Source code(tar.gz)
Source code(zip)

cysimdjson - Very fast Python JSON parsing library

Related tags

Overview

cysimdjson

Usage

Installation

Performance

Tests are reproducible

Manual build

Comments

Current behaviour

New behaviour

Setup tested

Releases(21.11)

21.11(Mar 22, 2022)

21.11-beta(Nov 5, 2021)

What's Changed

21.4-alpha(Apr 7, 2021)

Owner

TeskaLabs

cysimdjson - Very fast Python JSON parsing library

Marshall python objects to and from JSON

Same as json.dumps or json.loads, feapson support feapson.dumps and feapson.loads

json|dict to python object

Creates fake JSON files from a JSON schema

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Make JSON serialization easier

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Python script to extract news from RSS feeds and save it as json.

JSON Interoperability Vulnerability Labs

No more boilerplate to check and build a Python object from JSON.

A Cobalt Strike Scanner that retrieves detected Team Server beacons into a JSON object

Atom, RSS and JSON feed parser for Python 3