--- title: PyCoder’s Weekly | daily.dev description: PyCoder's Weekly Issue #743 covers Python stacks and queues using lists and deque, Django F-expressions for ORM queries, building and testing MCP clients in... canonical: https://daily.dev/posts/pycoder-s-weekly-4mjwh0fya 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: PyCoder's Weekly Issue #743 covers Python stacks and queues using lists and deque, Django F-expressions for ORM queries, building and testing MCP clients in... og:url: https://daily.dev/posts/pycoder-s-weekly-4mjwh0fya og:image: https://api.daily.dev/og/posts/4MJwH0fyA.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)** · 4 min read · 1 upvotes · 0 comments ## Summary PyCoder's Weekly Issue #743 covers Python stacks and queues using lists and deque, Django F-expressions for ORM queries, building and testing MCP clients in Python, Python 3.15 features including interpreter profiling mode and the newly accepted frozendict built-in type, secure PyPI publishing via GitHub Actions, building a fast HTML toolkit in C for Python, CSV data cleaning with pandas, and PSF news. Projects highlighted include a barcode generator library, a MicroPython IDE, and tools for importing Notion databases into pandas. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Questions this post answers ### What security fixes were released for Django 6.0.7 and 5.2.16? Django issued security releases for versions 6.0.7 and 5.2.16, addressing security vulnerabilities in the framework. These were published by the Django Software Foundation as targeted patch releases rather than feature updates, meaning teams running Django 6.0.x or 5.2.x should upgrade to these patched versions to stay protected. _daily.dev helps developers tracking Django security patches catch releases like these quickly._ ### Will Python 3.15 include a built-in frozendict type? Yes, Python 3.15 will add a frozen dictionary type through PEP 814, which was proposed by Victor Stinner after multiple earlier attempts to introduce a frozen dict to the language. The PEP has been accepted, meaning frozendict becomes a built-in type rather than requiring a third-party package. _developers planning Python 3.15 upgrades can follow language changes like this one on daily.dev._ ### What is Python 3.15's new interpreter profiling mode used for? Python 3.15 introduces an ultra-low overhead interpreter profiling mode designed to help contributors evaluate the experimental JIT compiler, showing what optimizations are working and what isn't. It was highlighted by Ken Jin, a key contributor to the experimental JIT project, as a tool for diagnosing JIT performance. _engineers evaluating Python's JIT progress can track updates like this on daily.dev._ ## Similar posts on daily.dev - [PyCoder’s Weekly](https://daily.dev/posts/pycoder-s-weekly-jt1mjxtie) · Planet Python · 1 upvotes · 0 comments - [PyCoder’s Weekly](https://daily.dev/posts/pycoder-s-weekly-oqwpneq66) · Planet Python · 0 upvotes · 0 comments - [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-q28dvgitx) · Planet Python · 0 upvotes · 0 comments --- Tags: [#python](https://daily.dev/tags/python), [#mcp](https://daily.dev/tags/mcp), [#django](https://daily.dev/tags/django), [#data-structures](https://daily.dev/tags/data-structures) [View this post on daily.dev](https://daily.dev/posts/pycoder-s-weekly-4mjwh0fya) ```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-4mjwh0fya","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/pycoder-s-weekly-4mjwh0fya"},"datePublished":"2026-07-14T19:50:11.141Z","dateModified":"2026-09-14T08:52:42.300Z","description":"PyCoder's Weekly Issue #743 covers Python stacks and queues using lists and deque, Django F-expressions for ORM queries, building and testing MCP clients in...","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-4mjwh0fya","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":1},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":0}],"keywords":"python,mcp,django,data-structures","timeRequired":"PT4M"} {"@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-4mjwh0fya#faq","mainEntity":[{"@type":"Question","name":"What security fixes were released for Django 6.0.7 and 5.2.16?","acceptedAnswer":{"@type":"Answer","text":"Django issued security releases for versions 6.0.7 and 5.2.16, addressing security vulnerabilities in the framework. 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