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.
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Release files for lark 1.3.1
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Source distribution (sdist)
| File | Size | Uploaded | Provenance | Actions |
|---|---|---|---|---|
| lark-1.3.1.tar.gz | 382.7 kB | Without provenance | Details for lark-1.3.1.tar.gz |
Built distribution (wheel)
| File | Interpreter | ABI | Platform | Actions Reset |
|---|---|---|---|---|
| lark-1.3.1-py3-none-any.whl | Python 3 | none | any | Details for lark-1.3.1-py3-none-any.whl |
Total release size: 495.9 kB
Release files / lark-1.3.1.tar.gz
| Download URL | lark-1.3.1.tar.gz |
|---|---|
| Size | 382.7 kB |
| Tags | Source |
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SHA-256 checksum How to use checksums |
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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 |
| Tags | Python 3 |
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twine/6.2.0 CPython/3.12.4
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Security for lark 1.3.1
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