--- title: PyCoder’s Weekly | daily.dev description: A curated roundup of Python news and tutorials: connecting Python scripts to a Jev model via a TypeSafe SDK and OpenRouter; how libraries embed Rust inside... canonical: https://daily.dev/posts/pycoder-s-weekly-buiyqr45e twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: PyCoder’s Weekly | daily.dev og:description: A curated roundup of Python news and tutorials: connecting Python scripts to a Jev model via a TypeSafe SDK and OpenRouter; how libraries embed Rust inside... og:url: https://daily.dev/posts/pycoder-s-weekly-buiyqr45e og:image: https://api.daily.dev/og/posts/buIyqR45e.png og:image:alt: PyCoder’s Weekly 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. # PyCoder’s Weekly **[Planet Python](https://daily.dev/sources/planetpython)** · 5 min read · 0 upvotes · 0 comments ## Summary A curated roundup of Python news and tutorials: connecting Python scripts to a Jev model via a TypeSafe SDK and OpenRouter; how libraries embed Rust inside Python using PyO3 and maturin; creating temporary files with tempfile; two draft PEPs (849 on type expressions, 848 on generational garbage collection); PyPy v8.0.0's release; a podcast on managing AI contributions to open source with the Wagtail team; a case study on BMLL processing 1.5 TB of market data 48x faster with Polars vs pandas; a statistics tutorial using NumPy, SciPy, and pandas; EVE Online's migration from Python 2 to Python 3; an essay on immutable data structures; common beginner Python mistakes; benchmarking Meta's CinderX CPython extension against stock CPython 3.14; a comparison of Cursor vs GitHub Copilot for Python development; a Claude API tutorial; and several open-source project links including pyfastlogging, Renart, Pyxel Code Maker, flowsint, and bashautom. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Questions this post answers ### How does PyO3 let you run Rust code inside a Python library? PyO3 lets developers write Rust code, annotate it with PyO3 macros, compile and install it using maturin, then import the compiled result directly into Python. This four-step workflow is demonstrated with a hand-rolled JSON parser written in Rust and called from Python, showing how libraries embed native Rust performance behind a Python interface. _Developers weighing Rust extensions for performance-critical Python code can track PyO3 techniques on daily.dev._ ### What performance gain did BMLL get from switching from pandas to Polars? BMLL Technologies achieved a 48x performance improvement by switching from pandas to Polars, enabling them to process 1.5 TB of nanosecond-precision market data in under 4 minutes. This speedup mattered for execution analysis at scale, where processing petabytes of trading data quickly is a competitive requirement. _Teams evaluating Polars over pandas for large-scale data work can follow real-world benchmarks like this on daily.dev._ ### Why is EVE Online migrating from Python 2 to Python 3? EVE Online has run on Python 2 since its 2003 launch, comprising 2.4 million lines of code on a custom Stackless interpreter that stopped receiving updates at Python 3.8, and the game is now in the process of migrating to Python 3 to move past that stalled, unsupported interpreter version. _Engineers planning a long-overdue Python 2 to 3 migration can find similar real-world case studies on daily.dev._ ## Similar posts on daily.dev - [PyCoder’s Weekly](https://daily.dev/posts/pycoder-s-weekly-eg2o8u0ws) · Planet Python · 0 upvotes · 0 comments - [PyCoder’s Weekly](https://daily.dev/posts/pycoder-s-weekly-nxwdsx8ca) · Planet Python · 0 upvotes · 0 comments - [Python everywhere—but are we there yet?](https://daily.dev/posts/python-everywhere-but-are-we-there-yet--3p16huqid) · InfoWorld · 0 upvotes · 0 comments - [PyCoder’s Weekly](https://daily.dev/posts/pycoder-s-weekly-oqwpneq66) · Planet Python · 0 upvotes · 0 comments --- Tags: [#python](https://daily.dev/tags/python), [#rust](https://daily.dev/tags/rust) [View this post on daily.dev](https://daily.dev/posts/pycoder-s-weekly-buiyqr45e) ```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":"PyCoder’s Weekly","url":"https://daily.dev/posts/pycoder-s-weekly-buiyqr45e","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/pycoder-s-weekly-buiyqr45e"},"datePublished":"2026-09-29T19:51:30.844Z","dateModified":"2026-09-29T19:52:04.329Z","description":"A curated roundup of Python news and tutorials: connecting Python scripts to a Jev model via a TypeSafe SDK and OpenRouter; how libraries embed Rust inside...","image":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/3019a598bb7011e2897c32cd2e686224?_a=AQAEuop","thumbnailUrl":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/3019a598bb7011e2897c32cd2e686224?_a=AQAEuop","isAccessibleForFree":true,"articleSection":"Planet Python","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":"Planet Python","logo":"https://media.daily.dev/image/upload/t_logo,f_auto/v1/logos/eac3cc584cb043b5a242d13752bd3d0c","url":"https://daily.dev/sources/planetpython"},"commentCount":0,"discussionUrl":"https://daily.dev/posts/pycoder-s-weekly-buiyqr45e","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":0},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":0}],"keywords":"python,rust","timeRequired":"PT5M"} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"Planet Python","item":"https://daily.dev/sources/planetpython"},{"@type":"ListItem","position":3,"name":"PyCoder’s Weekly"}]} {"@context":"https://schema.org","@type":"FAQPage","@id":"https://daily.dev/posts/pycoder-s-weekly-buiyqr45e#faq","mainEntity":[{"@type":"Question","name":"How does PyO3 let you run Rust code inside a Python library?","acceptedAnswer":{"@type":"Answer","text":"PyO3 lets developers write Rust code, annotate it with PyO3 macros, compile and install it using maturin, then import the compiled result directly into Python. 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