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today I talk about Optional and a few approaches to today I talk about why mypy doesn't need an annotation for the first argument! - introduction to today I talk about the difference between object and Any when today I answer an interesting question which surprised me -- why is ` today I follow up to the video about Protocol and show for doing some light structural today we go over narrowings and `TypeGuard` -- which enables you to write your own user-defined narrowings! playlist: ...
today I show you what the `TYPE_CHECKING` constant is in the today I show the tools and processes I used to improve today I talk about how to package up typed code -- either inline types or today I describe the history lore of pytest and how an errant CVE led to finally deleting the py library -- I show the clever trick I use ... today I talk about raw strings, invalid escape sequences (W605), and how to automatically fix them! today I talk about the difference between len(x) and x.__len__() (as well as other similar functions!) playlist: ...
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python typing: Final / @final (intermediate) anthony explains #132
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python typing: Generator[T, S, R] (intermediate) anthony explains #297
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Last Updated: May 23, 2026
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