Python Warnings Beginner Intermediate Anthony Explains 320

Summary

today I talk about an extremely common mistake with I totally missed this improvement when reviewing 3.12 back in the day and it's pretty significant. but I think they missed one key ... the dreaded "E722 do not use bare 'except'"! today we today I show a quick introduction to type annotating code in today I go over all the tools I use to set up my projects, as well as the differences between 1-file libraries, multi-file libraries, and ... today I go over the easily confusable NotImplemented and NotImplementedError -- as well as covering functools.total_ordering ... continuing from last stream we work on a few more things after the 3.15 release (and 3.10 eol) streamed on ... today I talk about the with statement and context managers as well as how to implement a context manager class. playlist: ... today we go over narrowings and `TypeGuard` -- which enables you to write your own user-defined narrowings! playlist: ... I build out a simple skeleton for a command line interface in today I show you what the `TYPE_CHECKING` constant is in the typing module and why you would ever use it! - circular imports ... I realize I've talked a lot about pytest on the channel, but never given it a proper introduction! - testing a cli with pytest: ...