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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.

Release files for lark 1.3.1

For a detailed explanation of source distributions (sdists) and built distributions (wheels), please see the package formats documentation.

Source distribution (sdist)

Source distribution for lark 1.3.1
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lark-1.3.1.tar.gz 382.7 kB Details

Built distribution (wheel)

Table of built distributions (wheels) for lark 1.3.1
File Interpreter ABI Platform
lark-1.3.1-py3-none-any.whl Python 3 none any Details

Total release size: 495.9 kB

Release files / lark-1.3.1.tar.gz

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Size 382.7 kB
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Release files / lark-1.3.1-py3-none-any.whl

Download URL lark-1.3.1-py3-none-any.whl
Size 113.2 kB
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Release history Release notifications | RSS feed

This release

1.3.1 This release

2 release files

1.3.0

2 release files

1.2.2

2 release files

1.2.1

2 release files

1.1.9

2 release files

1.1.8

2 release files

1.1.7

2 release files

1.1.6

2 release files

1.1.5

2 release files

1.1.4

2 release files

1.1.3

2 release files

1.1.2

2 release files

1.1.1

2 release files

1.1.0

2 release files

1.0.0

2 release files

0.12.0

2 release files

0.11.3

1 release file

0.11.1

2 release files

0.11.0

2 release files

0.10.1

2 release files

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