Python Bytes

Topics covered in this episode:

• Dokku
• Summary of Major Changes Between Python Versions
• How to check Internet Speed via Terminal? speedtest-cli
• Blogs: We all should blog more
• Extras
• Joke

About the show

Sponsored by us! Support our work through:

• Our courses at Talk Python Training
• The Complete pytest Course
• Patreon Supporters

Connect with the hosts

• Michael: @mkennedy@fosstodon.org
• Brian: @brianokken@fosstodon.org
• Show: @pythonbytes@fosstodon.org

Join us on YouTube at pythonbytes.fm/live to be part of the audience. Usually Tuesdays at 11am PT. Older video versions available there too.

Michael #1: Dokku

• An open source PAAS alternative to Heroku.
• Dokku helps you build and manage the lifecycle of applications from building to scaling.
• Powered by Docker, you can install Dokku on any hardware.
• Once it's set up on a host, you can push Heroku-compatible applications to it via Git.
• Rich plug in architecture.

Brian #2: Summary of Major Changes Between Python Versions

• Nicholas Hairs
• Changes between versions & Tools & utilities to help with switching
• Hopefully you’re already at least at 3.8, but come on, 3.11 & 3.12 are so fun!
• Useful things
  • pyupgrade can automatically upgrade code base
    • (However, I frequently just upgrade and run tests and let my old code be as-is until it bugs me. - Brian)
  • black checks pyproject.toml requires-python setting and uses version specific rules.
• Versions (way more highlights listed in the article)
  • 3.8
    • Assignment expressions := walrus
    • f"{variable=}" now works
  • 3.9
    • Typing has built in generics like dict[], so no more from typing import Dict
    • Dict union operator
    • Strings can removeprefix and removesuffix
  • 3.10
    • Structural pattern matching match/case
    • Typing: Union using pipe |
    • Dataclasses support slots=True and kw_only=True
  • 3.11
    • tomllib included as a standard TOMP parser
    • Exception groups
    • Exception Notes add_note()
    • Typing: A Self type
    • Star unpacking expressions allowed in for statements: for x in *a, *b:
  • 3.12
    • f-strings can re-use quotes
    • Typing: better type parameter syntax
    • Typing: @override decorator ensures a method being overridden by a child class actually exists.

Michael #3: How to check Internet Speed via Terminal? speedtest-cli

• Command line interface for testing internet bandwidth using speedtest.net
• Just pipx install speedtest-cli
• Has a Python API too

Brian #4: Blogs: We all should blog more

• Jeff Triplett is attempting one post per day in February
  • Feb 1: Choosing the Right Python and Django Versions for Your Projects
  • Feb 2: My First Mac
    • Which also links to a quite interesting Personal: Default Apps 2023
  • Feb 3: What’s Your Go-to Comfort Media? [rough cut]
  • Feb 4: The Django apps I actually use (rough cut)
  • Feb 5: How to test with Django and pytest fixtures
• Need ideas?
  • Check out Build an idea bank and never run out of blog ideas
• Not using AI? Thanks. We appreciate that.
  • Maybe tag it as Not By AI

Extras

Brian:

• If upgrading to pytest 8, be aware that running individual tests with parametrization will result in a reverse order.
  • It shouldn’t matter. You shouldn’t be depending on test order.
  • But it was surprising to me.
  • Issue has been logged

Michael:

• Orbstack follow up

Joke: White Lies