• Python 3.14.0 alpha 1 is now available


• uv supports dependency groups


• dive: A tool for exploring each layer in a docker image


• pytest-metadata


• Extras


• Joke

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Michael #1: Python 3.14.0 alpha 1 is now available

• First of seven planned alpha releases.


• Many new features for Python 3.14 are still being planned and written. Among the new major new features and changes so far:
  
  
  
  • PEP 649: deferred evaluation of annotations
  
  
  • Improved error messages
  
  

Brian #2: uv supports dependency groups

• we covered dependency groups in episode 406


• as of 0.4.27, uv supports dependency groups


• docs show how to add dependencies with uv add --group
  
  
  
  • also “The --dev, --only-dev, and --no-dev flags are equivalent to --group dev, --only-group dev, and --no-group dev respectively.”
  
  


• To install a group, uv pip install --group doesn’t work yet.
  
  
  
  • It’s waiting for PyPA to decide on an interface for pip, and uv pip will use that interface.
  
  


• But sync works.
  

  $ uv init # create a pyproject.toml
  $ uv add --group foo pytest
  $ uv venv # create venv
  $ uv sync --group foo # will install all dependencies, including group "foo"
  

Michael #3: dive: A tool for exploring each layer in a docker image

• via Mike Fiedler


• Features:
  
  
  
  • Show Docker image contents broken down by layer
  
  
  • Indicate what's changed in each layer
  
  
  • Estimate "image efficiency"
  
  
  • Quick build/analysis cycles
  
  
  • CI Integration
  
  

Brian #4: pytest-metadata

• An incredibly useful plugin for adding, you guessed it, metadata, to your pytest results.


• Required for pytest-html but also useful on it’s own


• Adds metadata to
  
  
  
  • text output with --verbose
  
  
  • xml output when using --junit-xml, handy for CI systems that support junit.xml
  
  


• Other plugins depend on this and report in other ways, such as pytest-html


• By default, already grabs
  
  
  
  • Python version
  
  
  • Platform info
  
  
  • List of installed packages
  
  
  • List of installed pytest plugins
  
  


• You can add your own metadata


• You can access all metadata (and add to it) from tests, fixtures, and hook functions via a metadata fixture.


• This is in the Top pytest Plugins list, currently #5.

Extras

Brian:

• I’ve started filtering deprecated plugins from the pytest plugin list.


• I’m also going to start reviewing the list and pulling out interesting plugins as the topic of the next season of Test & Code.

Michael:

• Pillow 11 is out


• pip install deutschland


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Joke: Dog names