#82 Let's make a clear Python 3 statement

Python Bytes - Un pódcast de Michael Kennedy and Brian Okken - Lunes

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* GitHub coverage coming at the end! *

Brian #1: Building and Documenting Python REST APIs With Flask and Connexion

  • Doug Farrell, @writeson, on the RealPython site.
  • Tutorial with example.
    • REST explanation of what REST is and is not
    • Swagger, swagger.yml to define API
    • Use Connexion to incorporate swagger.yml into Flask app.
    • Nice succinct explanation of swagger and API configuration.
    • Demo of Swagger UI for API documentation.
    • JavaScript included for MVC implementation.

Michael #2: MyPy + PyCharm

  • Written by Ivan Levkivskyi
  • via Guido van Rossum
  • Ricky Teachey asks: “What advantages does using mypy bring to pycharm vs just using pycharm's native type checking- which is already pretty good?”
  • Response:
    • mypy is a bit more stricter/precise
    • it is more configurable, lots of options regulating type system "rules"
    • it typechecks the whole program, so that you immediately see errors your change causes in _other_ files
    • people run mypy in CI and want to see the result before push

Brian #3: Automatic code/doc conversion

  • pyupgrade
    • “A tool (and pre-commit hook) to automatically upgrade syntax for newer versions of the language.”
    • Can even convert to f-strings with --py36-plus option.
  • docs
    • “Run black on python code blocks in documentation files.”
    • blacken-docs provides a single executable (blacken-docs) which will modify .rst / .md files in place.

Michael #4: python3statement

  • via Bruno Alla
  • Matthias Bussonnier (Talk Python, episode 44)
    • “We now have 44 projects that pledged to drop #python2 in less than 30 months. Some already did ! To see which one, and how to migrate with as few disruption as possible for both Python 2 and 3 users head to http://python3statement.org/ ”
  • Supporting legacy Python: **it is a small but constant friction in the development of a lot of code.
  • We are keen to use Python 3 to its full potential, and we currently accept the cost of writing cross-compatible code to allow a smooth transition, but we don’t intend to maintain this compatibility indefinitely.
  • Nice “Why switch to Python 3?” section and resources
  • Nice list of participating projects
    • Can we get some that are not data science? :)

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