Python Bytes Podcast Por Michael Kennedy and Brian Okken capa

Python Bytes

Python Bytes

De: Michael Kennedy and Brian Okken
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Python Bytes is a weekly podcast hosted by Michael Kennedy and Brian Okken. The show is a short discussion on the headlines and noteworthy news in the Python, developer, and data science space.Copyright 2016-2026 Política e Governo
Episódios
  • #483 Thanks Brian

    #483 Thanks Brian
    Jun 9 2026
    Topics covered in this episode: Vulnerability and malware checks in uvHTTP GET requests with the Python standard libraryMillions of AI agents imperiled by critical vulnerability in open source packagealembic-git-revisionsExtrasJokeWatch on YouTube About the show Goodbye and Thanks Brian Thanks Calvin for being part of this and future episodes! Also new time for the live show. Thanks Brian for all the hard work over the years. Calvin #1: Vulnerability and malware checks in uv release just yesterday by Astral https://astral.sh/blog/uv-audituv audit scans dependencies for known vulnerabilities and abandoned packages via the OSV database — runs 4–10x faster than pip-auditMalware check runs on every install/sync, catching actively malicious packages (credential stealers, etc.) before they execute — including ones PyPI quarantined but lockfiles can still referenceEnable malware scanning with UV_MALWARE_CHECK=1 — it's opt-in and in previewFuture roadmap includes a resolver that steers toward vulnerability-free versions and install-time warnings scoped to newly added deps only Michael #2: HTTP GET requests with the Python standard library If you’re doing HTTP in Python, you’re probably using one of three popular libraries: requests, httpx, or urllib3.There have been issues with httpx lately.Niquest is another option: Drop-in replacement for Requests. Automatic HTTP/1.1, HTTP/2, and HTTP/3. WebSocket, and SSE included.But maybe less is more, especially in the age of agentic AIA good candidate needs two things to be true at once, not one: the used surface is small, and the behavior behind that surface is shallow. Calvin #3: Millions of AI agents imperiled by critical vulnerability in open source package "BadHost" (CVE-2026-48710) is a critical vulnerability in Starlette — the ASGI framework underlying FastAPI — with 325 million weekly downloads; also affects vLLM, LiteLLM, and most MCP server toolingThe exploit is trivial: injecting a single character into an HTTP Host header bypasses path-based authentication, and can lead to credential theft, SSRF, and in some cases remote code executionMCP servers are a prime target since they store credentials for external services (email, databases, cloud accounts) — exposed data in the wild includes biopharma clinical trial DBs, full mailboxes, HR/PII pipelines, and AWS topologyFix is available — patch to Starlette 1.0.1 immediately; use the free scanner at mcp-scan.nemesis.services to check if your servers are still running a vulnerable versionOpen source sustainability footnote: the maintainer triages near-daily security reports solo, in his free time — most are AI-generated noise, and real ones like this still compete for the same evenings and weekends Michael #4: alembic-git-revisions By Julien Danjou from MergifyAutomatic Alembic migration chaining based on git commit history. No more Multiple head revisions are present for given argument 'head'.See the introductory articleCaused by two migrations landed with the same down_revision, and Alembic doesn’t know which one comes first. The fix is always the same: someone manually edits the migration file to re-chain the revisions.The insight: git already knows the order Extras Calvin: GNU make can do pattern matching in the target. Not new at all, mentioned in the 1994-era docs. just and task don’t have this super power on the target name yet. train-%: uv run ./train.py $* --save-hyper-params --overwrite $(TRAIN_ARGS) Michael: Updated my HTTP client using packages from httpx to httpx2: listmonk, umami, and memberful. For motivation, see this reddit thread. Joke: Accurate
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    29 minutos
  • #482 Mr. Beast's episode

    #482 Mr. Beast's episode
    Jun 1 2026
    Topics covered in this episode: CVE-2026-48710: A Maintainer's Perspectivedaily-stars-explorerMarkdown to pdf with pandoc and typstpostman2pytestExtrasJokeWatch on YouTube About the show Brian #1: CVE-2026-48710: A Maintainer's Perspective Marcelo Trylesinskisuggested by Lee LuocksShort version: users of Starlette: upgrade to Starlette 1.0.1security professionals: we can’t treat open source projects like corporationsThis top link is a Starlette security advisory with the title Missing Host header validation poisons request.url.path, bypassing path-based security checksThe CVE apparently caused some negative press targeting starlette.However, “the vulnerability came from the application pattern and the deployment, never from something Starlette intended.”A quote from an OSTIF article: “This bug is a classic “responsibility gap” where if this maintainer didn’t patch, thousands of exposed projects would have to individually secure their projects. In doing this work, they’ve voluntarily taken on the responsibility to protect the ecosystem from long-term systemic harm. As with all open source projects, they owed us nothing and could have left this to be everyone else’s problem and took the extraordinary steps of helping the ecosystem.”Both X40 D-Sec and Ars Technica expected immediate fixes and responses from Starlette.That’s not good. We can do better. Michael #2: daily-stars-explorer Explore the full history of any GitHub repository.📈 Full Star History - Complete daily star counts for any repo⏰ Hourly Stars - Hour-by-hour activity with timezone support🔀 Compare Repos - Side-by-side comparison of any two repositories📊 Activity Timelines - Commits, PRs, Issues, Forks, Contributors over time📌 Pin Favorites - Bookmark repos for quick access without retyping📰 Feed Mentions - See when repos were mentioned on HN, Reddit, YouTube, GitHub💾 Export Data - Download as CSV or JSON🌙 Dark Mode - Easy on the eyesTry/use it online at emanuelef.github.io/daily-stars-explorer or install it for yourself. Brian #3: Markdown to pdf with pandoc and typst typst suggestion from Matt HarrisonMarkdown is awesomePandoc is great for converting markdown to tons of stuff but for pdf, it goes through LaTeX, which is … yuk (my opinion)Pandoc also can convert to typstAnd typst creates beautiful pdfs and is way easier (my opinion) to deal with than LaTeX.New tools brew upgrade pandocbrew install typstNow convert pandoc something.md --to typst -o something.typtypst compile something.typ something.pdf Michael #4: postman2pytest via MikhailBased on postman appConvert Postman Collection v2.1 JSON into executable pytest test suitesPostman collections document your API. postman2pytest turns that documentation into executable regression tests that run in CI. No manual rewriting, no drift. Extras: New blog, who dis? - testandcode.org is now on .org and a blog and soon to be a “publisher”. Joke: Centering a div
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    24 minutos
  • #481 Ways to die

    #481 Ways to die
    May 25 2026
    Topics covered in this episode: Dumb Ways for an Open Source Project to DieHow to create a pylock.toml lockfilehttps://github.com/facebook/LifeguardChoosing a Python Logging Library in 2026ExtrasJokeWatch on YouTube About the show Sponsored by us! Support our work through: Our courses at Talk Python TrainingThe Complete pytest CoursePatreon Supporters Connect with the hosts Michael: @mkennedy@fosstodon.org / @mkennedy.codes (bsky)Brian: @brianokken@fosstodon.org / @brianokken.bsky.socialShow: @pythonbytes@fosstodon.org / @pythonbytes.fm (bsky) Join us on YouTube at pythonbytes.fm/live to be part of the audience. Usually Monday at 11am PT. Older video versions available there too. Finally, if you want an artisanal, hand-crafted digest of every week of the show notes in email form? Add your name and email to our friends of the show list, we'll never share it. Michael #1: Dumb Ways for an Open Source Project to Die Core categories The maintainer leftThe maintainer is still thereSabotage and captureThe release pipeline brokeForce majeureThe world moved onThe project split - Examples Bulma PRs still from 2023, issues and PRs with no maintainer response for years, last release 1.5 years agodiskcache Similar, got hired by OpenAI, crickets after that Brian #2: How to create a pylock.toml lockfile Tim HopperTim walks through using uv, pip and pdm to create pylock.toml files.Recommendation: use uv export --format pylock.toml -o pylock.tomlHe also has How to install from a pylock.toml lockfile with pip but the short version is: use -r because tools treat it like a requirements file Michael #3: https://github.com/facebook/Lifeguard Lifeguard is a static analyzer to detect Lazy Imports incompatibilities and ease the adoption overhead for Lazy Imports in Python.I’m more excited about lazy imports after my Cutting Python Web App Memory Over 31% experienceSome Python patterns depend on imports executing immediately. For example: Module-level side effects — a module that registers a handler or modifies global state at import time will behave differently if that import is deferred.The registry pattern — a module that registers itself (e.g., adding to a global dict) when imported will silently fail to register under Lazy Imports.sys.modules manipulation — code that reads or writes sys.modules assumes prior imports have already executed.Metaclasses and __init_subclass__ — class creation side effects may depend on imports being resolved.Project Stage: Beta Lifeguard is in active development. We are aiming to be ready for general use by the Python 3.15 final release. Brian #4: Choosing a Python Logging Library in 2026 Ayooluwa Isaiah" which libraries matter, how they compare, where they overlap with the standard module, and when each one makes sense.”The slant with this article is the need to log json output, which seems reasonable as things like API entry and exit point logging will include json.Covered libraries standard library logging with a hat tip to python-json-logger Same site has a guide to setting up python-json-loggerstructlogLoguruLogbookpicologgingSome benchmarks with structlog, stdlib+json, and Loguru, with structlog coming out fasterI liked the Loguru example I’m going to have to try @logger.catch and logger.exception() for easily logging exceptions and serialize=True to enable JSON output. Extras Brian: When Women Stopped Coding - Planet Money segment , spotted on BlueSky from Savannah OstrowskiLean TDD is now leaner Still working on audio version, but some great changes in 0.7.1 version Ch 6, TDD Interpretations, move ATDD and some of BDD to chapterCh 7, Change name to TDD with Teams: BDD and ATDDCh 9, Lean TDD, streamline steps and chapterCh 10, Change name to Lean TDD with Teams: Lean ATDDCh 11, Lean TDD with AI, Add short discussion about guardrails and security Michael: New course: Python Web Security: OWASP Top 10 with Agentic AIAll courses now with Spanish subtitles, see announcement Joke: Stop texting me
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    33 minutos
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