#125 Will you conquer the deadlock empire?
Published April 13, 2019
31 min
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    Sponsored by Datadog: pythonbytes.fm/datadog

    Brian #1: My How and Why: pyproject.toml & the 'src' Project Structure

    • Brian Skinn
    • pyproject.toml
      • but with setuptools, instead of flit or poetry
      • with a src dir
      • and tox and black
    • all the bits and pieces to make all of this work

    Michael #2: The Deadlock Empire: Slay dragons, master concurrency!

    • A game to test your thread safety and skill!
    • Deadlocks occur in code when two threads end up trying to enter two or more locks (RLocks please!)
    • Consider lock_a and lock_b
    • Thread one enters lock_a and will soon enter lock_b
    • Thread two enters lock_b and will soon enter lock_a
    • Imagine transferring money between two accounts, each with a lock, and each thread does this in opposite order.

    Brian #3: Cog 3.0

    • Ned Batchelder’s cog gets an update (last one was a few years ago).
    • Cog … finds snippets of Python in text files, executes them, and inserts the result back into the text. It’s good for adding a little bit of computational support into an otherwise static file.”
    • Development moved from Bitbucket to GitHub.
    • Travis and Appveyor CI.
    • The biggest functional change is that errors during execution now get reasonable tracebacks that don’t require you to reverse-engineer how cog ran your code.
    • mutmut mutation testing added. Cool.
    • What I want to know more about is this statement: “…now I use it for making all my presentations”. Very cool idea.

    Michael #4: StackOverflow 2019 Developer Survey Results

    Brian #5: Cuv’ner A commanding view of your test-coverage"

    • Coverage visualizations on the console.

    Michael #6: Mobile apps launched

    • The tech (sadly only 50% Python)
      • Xamarin, Mono, and C# on the device-side
      • Python, Pyramid, and MongoDB on the server-side
    • 90% code sharing or higher
    • Native applications
    • Build the prototype myself on Windows
    • Hired Giorgi via TopTal
    • Dear mobile app developers: You have my sympathy!
    • Try the app at training.talkpython.fm/apps Comes with 2 free courses for anyone who logs in.
    • Android only at the moment but not for long





    • “When your hammer is C++, everything begins to look like a thumb.”
    • “Why don't jokes work in octal? Because 7 10 11”
      • Over explained: Why is 6 afraid of 7. Cuz 7 8 9.
      • Follow on: Why did 7 eat 9? He was trying to eat 3^2 meals.
    • I've been using Vim for a long time now, mainly because I can't figure out how to exit.
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