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ijl/orjson: Fast, correct Python JSON library supporting dataclasses, datetimes, ...

原作者: [db:作者] 来自: 网络 收藏 邀请

开源软件名称：

ijl/orjson

开源软件地址：

https://github.com/ijl/orjson

开源编程语言：

Python 62.1%

开源软件介绍：

orjson

orjson is a fast, correct JSON library for Python. It benchmarks as the fastest Python library for JSON and is more correct than the standard json library or other third-party libraries. It serializes dataclass, datetime, numpy, and UUID instances natively.

Its features and drawbacks compared to other Python JSON libraries:

  • serializes dataclass instances 40-50x as fast as other libraries
  • serializes datetime, date, and time instances to RFC 3339 format, e.g., "1970-01-01T00:00:00+00:00"
  • serializes numpy.ndarray instances 4-12x as fast with 0.3x the memory usage of other libraries
  • pretty prints 10x to 20x as fast as the standard library
  • serializes to bytes rather than str, i.e., is not a drop-in replacement
  • serializes str without escaping unicode to ASCII, e.g., "好" rather than "\\u597d"
  • serializes float 10x as fast and deserializes twice as fast as other libraries
  • serializes subclasses of str, int, list, and dict natively, requiring default to specify how to serialize others
  • serializes arbitrary types using a default hook
  • has strict UTF-8 conformance, more correct than the standard library
  • has strict JSON conformance in not supporting Nan/Infinity/-Infinity
  • has an option for strict JSON conformance on 53-bit integers with default support for 64-bit
  • does not provide load() or dump() functions for reading from/writing to file-like objects

orjson supports CPython 3.7, 3.8, 3.9, 3.10, and 3.11. It distributes x86_64/amd64, aarch64/armv8, and arm7 wheels for Linux, amd64 and aarch64 wheels for macOS, and amd64 wheels for Windows. orjson does not support PyPy. Releases follow semantic versioning and serializing a new object type without an opt-in flag is considered a breaking change.

orjson is licensed under both the Apache 2.0 and MIT licenses. The repository and issue tracker is github.com/ijl/orjson, and patches may be submitted there. There is a CHANGELOG available in the repository.

  1. Usage
    1. Install
    2. Quickstart
    3. Migrating
    4. Serialize
      1. default
      2. option
    5. Deserialize
  2. Types
    1. dataclass
    2. datetime
    3. enum
    4. float
    5. int
    6. numpy
    7. str
    8. uuid
  3. Testing
  4. Performance
    1. Latency
    2. Memory
    3. Reproducing
  5. Questions
  6. Packaging
  7. License

Usage

Install

To install a wheel from PyPI:

pip install --upgrade "pip>=20.3" # manylinux_x_y, universal2 wheel support
pip install --upgrade orjson

To build a wheel, see packaging.

Quickstart

This is an example of serializing, with options specified, and deserializing:


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