#270 Can errors really be beautiful?

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About the show

Sponsored by Datadog: pythonbytes.fm/datadog

Special guest: Dean Langsam

Brian #1: A Better Pygame Mainloop

• Glyph
• Doing some game programming is a great way to work on coding for early devs (and experienced devs).
• pygame is a popular package for writing games in Python
• But… the normal example of a main loop, which listens for events and dispatches actions based on events, has some problems:
  • it’s got a while 1:
    • that wastes power, too much busy waiting
    • looks bad, due to “screen tearing” which is writing to a screen while your in the middle of drawing it
• This post discusses the problems, and walks through to an async main loop that creates a better gaming experience.

Michael #2: awesome sqlalchemy

• A few notable ones
• SQLAlchemy-Continuum: Versioning and auditing extension for SQLAlchemy.
• SQLAlchemy-Utc: SQLAlchemy type to store aware datetime.datetime values.
• SQLAlchemy-Utils: Various utility functions, new data types and helpers for SQLAlchemy
• filedepot: DEPOT is a framework for easily storing and serving files in web applications.
• SQLAlchemy-ImageAttach: SQLAlchemy-ImageAttach is a SQLAlchemy extension for attaching images to entity objects.
• SQLAlchemy-Searchable: Full-text searchable models for SQLAlchemy.
• sqlalchemy_schemadisplay: This module generates images from SQLAlchemy models.
• Can we also get a shoutout to SQLModel?

Dean #3: ThreadPoolExecutor in Python: The Complete Guide

• Long, but worth it (80-120 minutes). Could be consumed in parts. It’s mostly a collection of other blogposts on superfastpython
• Many examples
• LifeCycle
• Usage patterns
  • Map and was
  • as_completed vs sequentially
  • callbacks
• IO-Bound vs CPU-bound
• Common Questions
• Comparison
  • vs. ProcessPoolExecutor
  • vs. threading.Thread
  • vs. AsyncIO

Brian #4: Chaining comparison operators

• Rodrigo Girão Serrão
• I use chained expressions all the time, mostly with ranges:
  • min