#stdlib — Public Fediverse posts

Now this is an interesting #Python problem. I don't know if it's a #bug, but it's a change in behaviour that I don't see documented.

I upgraded from #Debian 12/Bookworm to 13/Trixie, so the default Python3 changed from 3.11 to 3.13. A script of mine broke, because `pathlib.Path.is_mount()` changed behaviour when the path is a symlink (at least to a directory).

i.e. I'm testing a path that is a symlink. The symlink points to a directory. That directory *is* a mountpoint. The `.is_mount()` test in 3.11 returned True, while in 3.13 it returns False.

This seems wrong to me. Most path-manipulation functions transparently treat symlinks as if they were the pointed-to object unless you pass an option/flag specifically to say you want the symlink itself.

Gonna have to dig to see what else I can find.

#pathlib #path #is_mount #stdlib #behaviour #symlink #filesystem #mountpoint #mount

Stdlib: A library of frameworks, templates, and guides for technical leadership
https://debuggingleadership.com/stdlib
#ycombinator #technical_leadership #engineering_management #stdlib #leadership_resources #management_templates #engineering_frameworks #team_building #software_architecture #debugging_leadership

Brand new PEP by @emmatyping to add Zstandard to the standard library:
https://peps.python.org/pep-0784/

Will it make it in to 3.14 before the feature freeze on 2025-05-06? It'll be close but it's possible!

The PEP also suggests namespacing the other compression libraries lzma, bz2 and zlib, with a 10-year deprecation for the old names.

Join the discussion to give your support, suggestions or feedback:

https://discuss.python.org/t/pep-784-adding-zstandard-to-the-standard-library/87377

#PEP #PEP784 #zstd #zstandard #stdlib #Python #compression

Unix buffering: The clearest explanation I've ever seen about line buffering, block buffering, and tty output vs simple file / pipe
https://jvns.ca/blog/2024/11/29/why-pipes-get-stuck-buffering/
#buffering #stdlib #linux #shell #unix #cli #+