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grappa

grappa is an declarative, verbose, and expressive assertion library for Python.

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grappa Reviews and Details

This page is designed to help you find out whether grappa is good and if it is the right choice for you.

#Testing #Python

Screenshots and images

  • grappa Landing page
    Landing page //
    2022-11-06

Features & Specs

  1. Expressive Assertions

    Grappa provides a rich set of expressive assertions which allow for writing readable and concise test cases.

  2. Chainable Syntax

    The library supports a chainable syntax that can improve the readability and maintainability of test assertions.

  3. Integration

    Grappa can be integrated with multiple testing frameworks, such as Pytest, which can make it easier to incorporate into existing test suites.

  4. Extensibility

    The framework supports custom matchers, allowing developers to extend the library's functionality tailored to their specific needs.

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Is grappa good?

Grappa is a solid, mature parsing library for the JVM that lets developers build parsers directly in Java using a fluent, PEG-based (Parsing Expression Grammar) approach without needing a separate grammar file or code generation step.

Why choose grappa?

  • Uses Parsing Expression Grammars (PEG), which are unambiguous and easier to reason about than traditional context-free grammars
  • Grammars are written in pure Java as a fluent DSL, so there's no external grammar file or code-generation build step
  • Integrates naturally into existing Java/JVM projects and tooling
  • Supports parser actions, error recovery, and value stack manipulation for building ASTs
  • Successor to the popular Parboiled library, benefiting from lessons learned in that project
  • Open source and hostable/inspectable directly on GitHub

Recommended for

  • Java and JVM developers who want to build parsers without learning a separate grammar language
  • Projects needing custom domain-specific languages (DSLs) or configuration formats
  • Developers who prefer PEG semantics over ambiguous CFG-based tools like ANTLR
  • Teams that want parser logic kept inline in their codebase rather than generated
  • Prototyping and small-to-medium parsing tasks where fluent Java code is convenient

External links

We have collected here some useful links to help you find out if grappa is good.

  • Public traffic stats of grappa

    Check the traffic stats of grappa on SimilarWeb. The key metrics to look for are: monthly visits, average visit duration, pages per visit, and traffic by country. Moreoever, check the traffic sources. For example "Direct" traffic is a good sign.

  • Domain Rating (DR)

    Check the "Domain Rating" of grappa on Ahrefs. The domain rating is a measure of the strength of a website's backlink profile on a scale from 0 to 100. It shows the strength of grappa's backlink profile compared to the other websites. In most cases a domain rating of 60+ is considered good and 70+ is considered very good.

  • Domain Authority (DA)

    Check the "Domain Authority" of grappa on MOZ. A website's domain authority (DA) is a search engine ranking score that predicts how well a website will rank on search engine result pages (SERPs). It is based on a 100-point logarithmic scale, with higher scores corresponding to a greater likelihood of ranking. This is another useful metric to check if a website is good.

  • Public opinion on Reddit

    The latest comments about grappa on Reddit. This can help you find out how popualr the product is and what people think about it.

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Is grappa good? This is an informative page that will help you find out. Moreover, you can review and discuss grappa here. The primary details have not been verified within the last quarter, and they might be outdated. If you think we are missing something, please use the means on this page to comment or suggest changes. All reviews and comments are highly encouranged and appreciated as they help everyone in the community to make an informed choice. Please always be kind and objective when evaluating a product and sharing your opinion.

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