Using vertical bar "|" for unions makes the package incompatible to python < 3.10 but 3.9 is still listed

[SimonStier]

Usage:

pyiron_snippets/pyiron_snippets/resources.py

Line 37 in 7a4fe2a

def search(self, name: Iterable[str] | str = "*") -> Iterator[Any]:

Version compatibility:

pyiron_snippets/pyproject.toml

Line 20 in 7a4fe2a

"Programming Language :: Python :: 3.9",

See also: https://stackoverflow.com/questions/64615988/what-does-vertical-bar-pipe-in-function-arguments-type-annotations-mean

[liamhuber]

Hi @SimonStier, welcome to snippets!

Good catch 🚀 I believe we can get backwards compatibility for this syntax using from __future__ import annotations in the relevant files, and this is my preferred solution.

Unfortunately, our CI suite has a bug preventing our python versions from being correctly read, so we're not actually getting 3.9 test coverage. Hence having missed the bug in this file. Fixing that bug is my top priority today, but this one is so quick I made a little PR just now. Once I get the CI bug fixed and the version updated here, we'll get a final confirmation that this (or a related) bug is not hiding anywhere else in snippets, and I'll release a patch.