--- title: Building your DSL compiler in Python - Mateusz Sok贸艂 description: [EuroPython 2026 - S3B on 2026-07-17] 馃帳 *Building your DSL compiler in Python by Mateusz Sok贸艂* 馃敆... canonical: https://daily.dev/posts/building-your-dsl-compiler-in-python---mateusz-sok--ng9xuvgvm twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Building your DSL compiler in Python - Mateusz Sok贸艂 | daily.dev og:description: [EuroPython 2026 - S3B on 2026-07-17] 馃帳 *Building your DSL compiler in Python by Mateusz Sok贸艂* 馃敆... og:url: https://daily.dev/posts/building-your-dsl-compiler-in-python---mateusz-sok--ng9xuvgvm og:image: https://api.daily.dev/og/posts/Ng9XuvGVM.png og:image:alt: Building your DSL compiler in Python - Mateusz Sok贸艂 og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # Building your DSL compiler in Python - Mateusz Sok贸艂 **[EuroPython Conference](https://daily.dev/sources/europython)** 路 29 min read 路 0 upvotes 路 0 comments ## Summary [EuroPython 2026 - S3B on 2026-07-17] 馃帳 *Building your DSL compiler in Python by Mateusz Sok贸艂* 馃敆 https://ep2026.europython.eu/session/building-your-dsl-compiler-in-python 馃摑 Abstract: A multitude of Python libraries offer Just In Time (JIT) compilation capabilities for general purpose computations, such as JAX or Numba. But in certain cases these solutions might not be enough, thus we seek more specialized solutions that can include domain knowledge as well. Compilers for Domain Specific Languages (DSL) allow us to incorporate additional information during compilation, possibly tied to a specific domain, such as sparse arrays computing. In this talk I'm going to introduce [Finch](https://finch-tensor.org/) - language and a compiler for sparse and structured multidimensional arrays, which specializes its kernels for control flow and data structures. It supports common control flow (loops, if conditions, etc.) and a wide variety of data structures - dense, sparse list, triangles, coordinate, or symmetry. The ongoing effort to move Finch from the original Julia implementation to pure Python exposed us to new ways of using Python - as a language for implementing compilers. In this talk I will present some key aspects of Python language and ecosystem which played a central role in making us productive in the last months during this undertaking: - Defining IRs with dataclasses and utilizing Structural Pattern Matching for term rewriting, - Using [Lark](https://lark-parser.readthedocs.io/en/stable/) for parsing custom languages into large IR structures, - Expressing complex rewrite schemes with [rewrite-tools](https://pypi.org/project/rewrite-tools/). The audience will learn our approach to designing the structure of a compiler, together with a few technical decisions made along the way. I hope these insights will be useful for engineers and scientists coming from closely related fields and projects also involving compiling custom languages, such as probabilistic programming or hardware design. --- This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License: https://creativecommons.org/licenses/by-nc-sa/4.0/ ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: --- Tags: [#python](https://daily.dev/tags/python), [#conference](https://daily.dev/tags/conference) [View this post on daily.dev](https://daily.dev/posts/building-your-dsl-compiler-in-python---mateusz-sok--ng9xuvgvm) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"Building your DSL compiler in Python - Mateusz Sok贸艂","url":"https://daily.dev/posts/building-your-dsl-compiler-in-python---mateusz-sok--ng9xuvgvm","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/building-your-dsl-compiler-in-python---mateusz-sok--ng9xuvgvm"},"datePublished":"2026-08-19T10:14:19.554Z","dateModified":"2026-08-19T12:02:00.973Z","description":"[EuroPython 2026 - S3B on 2026-07-17]\n馃帳 *Building your DSL compiler in Python by Mateusz Sok贸艂* \n馃敆...","image":"https://i.ytimg.com/vi/G9es51_7HQQ/sddefault.jpg","thumbnailUrl":"https://i.ytimg.com/vi/G9es51_7HQQ/sddefault.jpg","isAccessibleForFree":true,"articleSection":"EuroPython Conference","inLanguage":"en","publisher":{"@type":"Organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180}},"author":{"@type":"Organization","name":"EuroPython Conference","logo":"https://media.daily.dev/image/upload/s--qu8RO-lH--/f_auto,q_auto/v1777800764/logos/europython?_a=BAMAMiWQ0","url":"https://daily.dev/sources/europython"},"commentCount":0,"discussionUrl":"https://daily.dev/posts/building-your-dsl-compiler-in-python---mateusz-sok--ng9xuvgvm","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":0},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":0}],"keywords":"python,conference","timeRequired":"PT29M","video":{"@type":"VideoObject","name":"Building your DSL compiler in Python - Mateusz Sok贸艂","description":"[EuroPython 2026 - S3B on 2026-07-17]\n馃帳 *Building your DSL compiler in Python by Mateusz Sok贸艂* \n馃敆...","thumbnailUrl":"https://i.ytimg.com/vi/G9es51_7HQQ/sddefault.jpg","uploadDate":"2026-08-19T10:14:19.554Z","duration":"PT29M","url":"https://api.daily.dev/r/Ng9XuvGVM","embedUrl":"https://www.youtube.com/embed/G9es51_7HQQ"}} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"EuroPython Conference","item":"https://daily.dev/sources/europython"},{"@type":"ListItem","position":3,"name":"Building your DSL compiler in Python - Mateusz Sok贸艂"}]} ```