#396 uv-ing your way to Python

Python Bytes

Topics covered in this episode:

• uv venv --python & uv python
• Python 3.12.5 released
• Compile and use dependencies for multiple Python versions in Tox
• Catalog of Dark Patterns
• Extras
• Joke

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Brian #1: uv venv --python & uv python

• I was reading this article Python Packaging is Great Now: uv is all you need
• It’s a little too “look, a silver bullet” for me, but it did point out some cool uv stuff I didn’t know about.
  • uv venv venv --python 3.12 creates a virtual environment with Python 3.12,
    • even if you didn’t have 3.12 installed on your system already.
    • If it doesn’t work, try adding --python-preference managed
  • uv python list shows all the python versions on your computer
  • There’s quite a few “experimental features”
    • run Run a command or script (experimental)
    • init Create a new project (experimental)
    • add Add dependencies to the project (experimental)
    • remove Remove dependencies from the project (experimental)
    • sync Update the project's environment (experimental)
    • lock Update the project's lockfile (experimental)
    • tree Display the project's dependency tree (experimental)
    • tool Run and manage tools provided by Python packages (experimental)
    • python Manage Python versions and installations (experimental)
• uv add --dev pytest will add pytest to your dev dependencies.
• uv tree rocks
• uv might not have “solved packaging” (or maybe it might have)
  • but it sure is fun to watch the experimentation of different workflows.

Michael #2: Python 3.12.5 released

• Lots of changes, see the release notes

Brian #3: Compile and use dependencies for multiple Python versions in Tox

• Viktor Rimark
• Cool idea to use the {envname}, which specifies the tox environment, in the name of a requirements-dev.txt file name.
• Then add a requirements tox target to generate pip-compile-ed files.
• Now I gotta try doing all of this with uv lock
• Then we need everyone to mod their tools to comply with PEP 571, when/if it’s adopted (covered it last week)

Michael #4: Catalog of Dark Patterns

• Including
  • Bait and Switch
  • Confirm Shaming
  • Disguised Ads
  • Roach Motel
  • Fake Scarcity
  • …

Extras

Brian:

• Recording of Hello, pytest! is done. Editing now. On track for the 19th (or before).

Michael:

• Django 5.1 released
• Python 3.13.0 release candidate 1 released

Joke:

• clownstrike
  • ARS Technica article on DMCA for ClownStrike