Elegant Solutions For Everyday Python Problems

on YouTube ↗33m

" summary

Shows concrete patterns: a Money class implements dunder add and on-the-fly currency conversion so adding $ and € just works; a Server becomes iterable with a generator to yield only active services; a tiny CLI uses getattr for dynamic commands; functools.partial makes base-2 int parsing ergonomic; a roughly 400-line REST client builds paths and returns 404s when appropriate; contextmanager/decorator examples (freezegun included) restore state reliably; namedtuple defaults and subclassing finish the toolbox.

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" chapters (15)

1. 0:00Intro
2. 0:59slides
3. 3:35Magic methods start and end with a double underscore (dunder)
4. 6:16some magic methods map to symbols
5. 6:38other magic methods map to built-in functions
6. 7:13Making classes iterable
7. 11:26Why does this work?
8. 14:56Example: command line tool with dynamic commands
9. 16:15Output
10. 19:52define endpoint url & other connection properties
11. 22:33Example Problem Feature Flags
12. 24:04The better way: using the contextmanager decorator
13. 27:47Problem: lost context using a decorator
14. 28:05Decorators: Common uses
15. 30:15Giving NamedTuples default values

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