Category: 3-SometimeTechTalk

Explore how Capital One is using tech to innovate the banking experience here.

Connect with Kathleen on LinkedIn and visit her blog. 

Shoutout to user Theraot for answering the questions How to connect a signal with extra arguments in Godot 4, which won them a Lifeboat badge.

Clayton Gentry has been digitally oriented his whole life. When he was younger, he was into photography and making videos with his friends and for school - either highlight videos for school events or promotional videos for businesses. He's always liked making things look good on a screen, and was attracted to the art of it - which, he attributes to his mother's genes. These days, he lives in Brooklyn, plays guitar, and likes to run in Prospect Park near his home.

Toward the end of 2022, Clayton and his co-founder, Michael, re-connected on starting something new. Given Michael had extensive industry knowledge in the podcast world, Clayton and he combined their super powers to take on the multi-platform nature of podcasting.

This is the creation story of Podstock.

Sponsors

• Paddle.com
• Sema Software
• PropelAuth
• Postman
• Meilisearch

Links

• https://podstock.io/
• https://www.linkedin.com/in/clayton-gentry-6492588a/

Our Sponsors:
* Check out Vanta: https://vanta.com/CODESTORY


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Andrew McClanahan, Senior Director at LexisNexis Risk Solutions for Government Relations rejoins for Part Three of the conversation around government program integrity and we tackle the urgent "so what" in today’s government assistance landscape — what can agencies actually do to strengthen their fraud, waste, and abuse defenses amid tightening budgets, AI-driven bot attacks, and mounting operational pressures? We also unpack practical, tech-enabled strategies for modernizing fraud prevention frameworks, streamlining verification processes, and improving both customer experience and staff retention.

SPONSORED BY GUARDSQUARE

Learn more about mobile application security and how to protect your app.

Congrats to Lifeboat badge winner Chitrakshi for rescuing TypeScript Error: No overload matches this call in Express route handler.

David Asamu grew up in Nigeria and got into technology early, through serving his community. He attended University, and continued his community efforts there, and was introduced to the joys of Python programming. Outside of tech, he spends time with his significant other and family. He enjoys soccer, whether it is watching over playing. When asked about food, he mentioned loving Nigerian delicacies, such as Jollof rice.

Previously, David was working at a fintech company. While he was there, he and his friends were observing the trends around AI - and they wanted to get more involved. So they got together and built something over the weekend... and eventually decided to advance AI through research.

This is the creation story of Nesla.

Sponsors

• Paddle.com
• Sema Software
• PropelAuth
• Postman
• Meilisearch

Links

• https://nesla.co/
• https://www.linkedin.com/in/david-asamu/

Our Sponsors:
* Check out Vanta: https://vanta.com/CODESTORY


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Anthony Scaramucci is the founder and managing partner at SkyBridge Capital, and host of The Rest Is Politics US. Scaramucci joins Big Technology Podcast to talk about his brief experience as Trump's communication director, what derailed Elon Musk’s White House stint, the problems with Trump’s 'Big Beautiful Bill,' the state of the trade war, Tim Cook’s tariff troubles, bitcoin, and more. We also cover Long Island culture at the top of the show, if you’re into that. Tune in for a fast paced, fascinating look into the state of the global economy and the tech titans trying to ride it to results.

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Clément "Kero" Renault wanted to be an architect when he was younger. During that time, he also learned about computers and built his first website - and he never stopped building. Funny story, he lost that first website cause it wasn't on Git. Outside of his professional life, he likes to draw, craft and to cook. He also enjoys video games, and mentioned Hidden Reign was his favorite game of all time, alongside the likes of Cyberpunk.

Seven years ago, Kero was in school, and he wanted to build a solid search experience, but not just a general search - one that indexed your data, and allowed you to have a "Google" just for your info. After winning a school hackathon, Kero and his mates wanted to take it to the next level.

This is the creation story of Meilisearch.

Sponsors

• Paddle.com
• Sema Software
• PropelAuth
• Postman
• Meilisearch

Links

• https://www.meilisearch.com/
• https://www.linkedin.com/in/kerollmops/

Our Sponsors:
* Check out Vanta: https://vanta.com/CODESTORY


Support this podcast at — https://redcircle.com/code-story/donations

Advertising Inquiries: https://redcircle.com/brands

Privacy & Opt-Out: https://redcircle.com/privacy

Antithesis is an autonomous testing platform that finds bugs in your software with perfect reproducibility.

Connect with Will Wilson on Linkedin.

Congrats to user hannes neukermans whose question How can I do tag wrapping in Visual Studio Code? won them a Stellar Question badge.

Our 2025 Developer Survey is live! We want to know what your developer life is like!

Topics covered in this episode:

• Making PyPI’s test suite 81% faster
• People aren’t talking enough about how most of OpenAI’s tech stack runs on Python
• PyCon Talks on YouTube
• Optimizing Python Import Performance
• Extras
• Joke

Watch on YouTube

About the show

Sponsored by Digital Ocean: pythonbytes.fm/digitalocean-gen-ai Use code DO4BYTES and get $200 in free credit

Connect with the hosts

• Michael: @mkennedy@fosstodon.org / @mkennedy.codes (bsky)
• Brian: @brianokken@fosstodon.org / @brianokken.bsky.social
• Show: @pythonbytes@fosstodon.org / @pythonbytes.fm (bsky)

Join us on YouTube at pythonbytes.fm/live to be part of the audience. Usually Monday at 10am 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.

Brian #1: Making PyPI’s test suite 81% faster

• Alexis Challande
• The PyPI backend is a project called Warehouse
• It’s tested with pytest, and it’s a large project, thousands of tests.
• Steps for speedup
  • Parallelizing test execution with pytest-xdist
    • 67% time reduction
    • --numprocesses=auto allows for using all cores
    • DB isolation - cool example of how to config postgress to give each test worker it’s on db
    • They used pytest-sugar to help with visualization, as xdist defaults to quite terse output
  • Use Python 3.12’s sys.monitoring to speed up coverage instrumentation
    • 53% time reduction
    • Nice example of using COVERAGE_CORE=sysmon
  • Optimize test discovery
    • Always use testpaths
    • Sped up collection time. 66% reduction (collection was 10% of time)
    • Not a huge savings, but it’s 1 line of config
  • Eliminate unnecessary imports
    • Use python -X importtime
    • Examine dependencies not used in testing.
    • Their example: ddtrace
      • A tool they use in production, but it also has a couple pytest plugins included
      • Those plugins caused ddtrace to get imported
      • Using -p:no ddtrace turns off the plugin bits
• Notes from Brian:
  • I often get questions about if pytest is useful for large projects.
  • Short answer: Yes!
  • Longer answer: But you’ll probably want to speed it up
  • I need to extend this article with a general purpose “speeding up pytest” post or series.
  • -p:no can also be used to turn off any plugin, even builtin ones.
    • Examples include
      • nice to have developer focused pytest plugins that may not be necessary in CI
      • CI reporting plugins that aren’t needed by devs running tests locally

Michael #2: People aren’t talking enough about how most of OpenAI’s tech stack runs on Python

• Original article: Building, launching, and scaling ChatGPT Images
• Tech stack: The technology choices behind the product are surprisingly simple; dare I say, pragmatic!
  • Python: most of the product’s code is written in this language.
  • FastAPI: the Python framework used for building APIs quickly, using standard Python type hints. As the name suggests, FastAPI’s strength is that it takes less effort to create functional, production-ready APIs to be consumed by other services.
  • C: for parts of the code that need to be highly optimized, the team uses the lower-level C programming language
  • Temporal: used for asynchronous workflows and operations inside OpenAI. Temporal is a neat workflow solution that makes multi-step workflows reliable even when individual steps crash, without much effort by developers. It’s particularly useful for longer-running workflows like image generation at scale

Michael #3: PyCon Talks on YouTube

• Some talks that jumped out to me:
  • Keynote by Cory Doctorow
  • 503 days working full-time on FOSS: lessons learned
  • Going From Notebooks to Scalable Systems
    • And my Talk Python conversation around it. (edited episode pending)
  • Unlearning SQL
  • The Most Bizarre Software Bugs in History
  • The PyArrow revolution in Pandas
    • And my Talk Python episode about it.
  • What they don't tell you about building a JIT compiler for CPython
    • And my Talk Python conversation around it (edited episode pending)
  • Design Pressure: The Invisible Hand That Shapes Your Code
  • Marimo: A Notebook that "Compiles" Python for Reproducibility and Reusability
    • And my Talk Python episode about it.
  • GPU Programming in Pure Python
    • And my Talk Python conversation around it (edited episode pending)
  • Scaling the Mountain: A Framework for Tackling Large-Scale Tech Debt

Brian #4: Optimizing Python Import Performance

• Mostly pay attention to #'s 1-3
• This is related to speeding up a test suite, speeding up necessary imports.
• Finding what’s slow
  • Use python -X importtime <the reset of the command
  • Ex: python -X importtime ptyest
• Techniques
  • Lazy imports
    • move slow-to-import imports into functions/methods
  • Avoiding circular imports
    • hopefully you’re doing that already
  • Optimize __init__.py files
    • Avoid unnecessary imports, heavy computations, complex logic
• Notes from Brian
  • Some questions remain open for me
    • Does module aliasing really help much?
  • This applies to testing in a big way
    • Test collection imports your test suite, so anything imported at the top level of a file gets imported at test collection time, even if you only are running a subset of tests using filtering like -x or -m or other filter methods.
    • Run -X importtime on test collection.
    • Move slow imports into fixtures, so they get imported when needed, but NOT at collection.
• See also:
  • option -X in the standard docs
  • Consider using import_profile

Extras

Brian:

• PEPs & Co.
  • PEP is a ‘backronym”, an acronym where the words it stands for are filled in after the acronym is chosen. Barry Warsaw made this one up.
  • There are a lot of “enhancement proposal” and “improvement proposal” acronyms now from other communities
• pythontest.com has a new theme
  • More colorful. Neat search feature
  • Now it’s excruciatingly obvious that I haven’t blogged regularly in a while
    • I gotta get on that
  • Code highlighting might need tweaked for dark mode

Michael:

• git-bug
• Pyrefly follow up

Joke: There is hope.