Lark Alternatives

Reviews and mentions

• Made a Programing language using python
  4 projects | reddit.com/r/Python | 29 Nov 2021

  There's also lark, which is used by a plethora of projects (I haven't used it, but I heard about PreQL on a podcast where they talk for a bit about what it's like to develop a new language in lark)

• Lark Python parsing toolkit 1.0 release
  1 project | news.ycombinator.com | 17 Nov 2021
• Lark 1.0 released – a parsing toolkit that is friendly, production-ready, and C
  1 project | news.ycombinator.com | 17 Nov 2021
• Lark 1.0 released - a parsing toolkit that is friendly, production-ready, and comprehensive.
  2 projects | reddit.com/r/Python | 16 Nov 2021

  Chiefly among the changes, Lark 1.0 dropped Python 2 support, and instead now uses the full range of Python 3 features, including type annotations. The API has also been straightened out and made more congruous. A full list of the changes is available in the release notes: https://github.com/lark-parser/lark/releases/tag/1.0.0

  2 projects | reddit.com/r/Python | 16 Nov 2021

  If you're new to parsing, it might be better to start with a tutorial: https://github.com/lark-parser/lark/blob/master/docs/json_tutorial.md

• Lark – a parsing toolkit for Python and JavaScript
  1 project | news.ycombinator.com | 8 Oct 2021
• Parser generators vs. handwritten parsers: surveying major languages in 2021
  11 projects | news.ycombinator.com | 21 Aug 2021

  I know SPARK's docstring use influenced PLY.

  PLY doesn't use Earley, but "Earley" does come up in the show notes of an interview with Beazley, PLY's author, at https://www.pythonpodcast.com/episode-95-parsing-and-parsers... . No transcript, and I'm not going to listen to it just to figure out the context.

  https://github.com/lark-parser/lark "implements both Earley(SPPF) and LALR(1)".

  Kegler, the author of that timeline I linked to, is the author of Marpa. Home page is http://savage.net.au/Marpa.html . The most recent HN comments about it are from a year ago, at https://news.ycombinator.com/item?id=24321395 .

  11 projects | news.ycombinator.com | 21 Aug 2021

  Lark [1] is a battle-tested pure-Python Earley parser. My company uses it in production. It is by far the easiest parser generator I've ever used.

  1. https://github.com/lark-parser/lark

• Safely execute script coming from user input in Python
  1 project | reddit.com/r/learnpython | 4 May 2021

  The only way I found so far is to use a parsing library, where I would have to define everything by myself (e.g. this one: https://github.com/lark-parser/lark ).

• Your favourite parser library?
  1 project | reddit.com/r/Python | 28 Apr 2021

  Allow me to shill my library, Lark.

• Turing Award to Aho and Ullman for work on compilers
  2 projects | news.ycombinator.com | 31 Mar 2021

  I would recommend most software engineers to avoid inventing a new configuration or other DSL and then write parser/lexer for it. This can easily lead to hard-to-debug program and long-term technical debt. Always research for existing and well-tested solutions first (even JSON!).

  Even if you don't invent your language, you can avoid writing a low-level parser/lexer by using a higher-level format, like context-free grammar (see Lark https://github.com/lark-parser/lark). Define and maintain a grammar is much easier.

• What is the most efficient way to pull off this loop?
  1 project | reddit.com/r/learnpython | 29 Jan 2021

  The dictionary approach seems good for translation. If you added some metadata to each word you might be able to use something like lark to parse the grammar: https://github.com/lark-parser/lark

• JSON parser
  2 projects | reddit.com/r/Python | 14 Jan 2021

  Writing parsers by hand is fun, but it's much easier to use a parser: https://github.com/lark-parser/lark/blob/master/examples/json_parser.py

• Creating Your Own Programming Language
  4 projects | reddit.com/r/learnprogramming | 25 Dec 2020

  I have not used the other parser generator libraries people have mentioned, but I recently used lark to write a compiler for a BASIC like language and it's really simple to use if you know about context free grammars. I've read a bit of http://craftinginterpreters.com/ and there are example grammars in there. You can either go through that site or you can checkout the examples in the lark github and get straight into it. They also have a gitter channel where you can ask for help.

• What I've Learned From AoC 2020
  1 project | reddit.com/r/adventofcode | 24 Dec 2020

  I've used both [CUP](http://www2.cs.tum.edu/projects/cup/ (Java) and [Lark](https://github.com/lark-parser/lark) (Python) to generate a parser (based off of a context free grammar) for me, but I'm yet to handwrite one. Any learning resource suggestions?