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a modern parsing library

Project Description

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
  • Python 2 & 3 compatible
  • Automatic line & column tracking
  • Standard library of terminals (strings, numbers, names, etc.)
  • Import grammars from Nearley.js
  • Extensive test suite
  • And much more!

Release history Release notifications

This version
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0.5.6

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0.5.5

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0.5.4

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0.5.3

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0.5.2

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0.5.1

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0.5.0

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0.4.1

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0.4.0

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0.3.7

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0.3.6

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0.3.5

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0.3.4

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0.3.3

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0.3.2

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0.3.1

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0.3.0

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0.2.10

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0.2.9

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0.2.8

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0.2.7

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0.2.6

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0.2.5

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0.2.4

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0.2.3

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0.2.2

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0.2.1

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0.1.2

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0.1.1

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0.1.0

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Filename, size & hash SHA256 hash help File type Python version Upload date
lark-parser-0.5.6.tar.gz (198.2 kB) Copy SHA256 hash SHA256 Source None Apr 5, 2018

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