lark

a modern parsing library

MIT 20 个版本 Python >=3.8

安装

pip install lark

poetry add lark

pipenv install lark

conda install lark

描述

Lark is a modern general-purpose parsing library for Python. With Lark, you can parse any context-free grammar, efficiently, with very little code. Main Features:

Builds a parse-tree (AST) automagically, based on the structure of the grammar
Earley parser
Can parse all context-free grammars
Full support for ambiguous grammars
LALR(1) parser
Fast and light, competitive with PLY
Can generate a stand-alone parser
CYK parser, for highly ambiguous grammars
EBNF grammar
Unicode fully supported
Automatic line & column tracking
Standard library of terminals (strings, numbers, names, etc.)
Import grammars from Nearley.js
Extensive test suite
And much more! Since version 1.2, only Python versions 3.8 and up are supported.

分类

Development Status :: 5 - Production/Stable Intended Audience :: Developers License :: OSI Approved :: MIT License Programming Language :: Python :: 3 Topic :: Software Development :: Libraries :: Python Modules Topic :: Text Processing :: General Topic :: Text Processing :: Linguistic

版本列表

1.3.1 2025-10-27

1.3.0 2025-09-22

1.2.2 2024-08-13

1.2.1 2024-08-13

1.1.9 2024-01-10

1.1.8 2023-10-23

1.1.7 2023-07-20

1.1.6 2023-07-17

1.1.5 2022-12-06

1.1.4 2022-11-02

1.1.3 2022-10-11

1.1.2 2022-03-01

1.1.1 2022-02-08

1.1.0 2022-02-07

1.0.0 2021-11-15

0.12.0 2021-11-12

0.11.3 2021-05-03

0.11.1 2020-11-16

0.11.0 2020-11-16

0.10.1 2020-10-13