• Vendorize packages from PyPI


• A Guide to Python's Weak References Using weakref Module


• Making Time Speak


• How Should You Test Your Machine Learning Project? A Beginner’s Guide


• Extras


• Joke

About the show

Sponsored by Code Comments, an original podcast from RedHat: pythonbytes.fm/code-comments

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• Michael: @mkennedy@fosstodon.org


• Brian: @brianokken@fosstodon.org


• Show: @pythonbytes@fosstodon.org

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Michael #1: Vendorize packages from PyPI

• Allows pure-Python dependencies to be vendorized: that is, the Python source of the dependency is copied into your own package.


• Best used for small, pure-Python dependencies

Brian #2: A Guide to Python's Weak References Using weakref Module

• Martin Heinz


• Very cool discussion of weakref


• Quick garbage collection intro, and how references and weak references are used.


• Using weak references to build data structures.
  
  
  
  • Example of two kinds of trees
  
  


• Implementing the Observer pattern


• How logging and OrderedDict use weak references

Michael #3: Making Time Speak

• by Prayson, a former guest and friend of the show


• Translating time into human-friendly spoken expressions


• Example: clock("11:15 ") # 'quarter past eleven'


• Features
  
  
  
  • Convert time into spoken expressions in various languages.
  
  
  • Easy-to-use API with a simple and intuitive design.
  
  
  • Pure Python implementation with no external dependencies.
  
  
  • Extensible architecture for adding support for additional languages using the plugin design pattern.
  
  

Brian #4: How Should You Test Your Machine Learning Project? A Beginner’s Guide

• François Porcher


• Using pytest and pytest-cov for testing machine learning projects


• Lots of pieces can and should be tested just as normal functions.
  
  
  
  • Example of testing a clean_text(text: str) -> str function
  
  


• Test larger chunks with canned input and expected output.
  
  
  
  • Example test_tokenize_text()
  
  


• Using fixtures for larger reusable components in testing
  
  
  
  • Example fixture: bert_tokenizer() with pretrained data
  
  


• Checking coverage

Extras

Michael:

• Twilio Authy Hack
  
  
  
  • Google Authenticator is the only option? Really?
  
  
  • Bitwarden to the rescue
  
  
  • Requires (?) an update to their app, whose release notes (v26.1.0) only say “Bug fixes”
  
  


• Introducing Docs in Proton Drive
  
  
  
  • This is what I called on Mozilla to do in “Unsolicited Advice for Mozilla and Firefox” But Proton got there first
  
  


• Early bird ending for Code in a Castle course

Joke: I Lied