Plurrrr

Python supports default values for arguments to functions, but those defaults are evaluated at function-definition time. A proposal to add defaults that are evaluated when the function is called has been discussed at some length on the python-ideas mailing list. The idea came about, in part, due to yet another resurrection of the proposal for None-aware operators in Python. Late-bound defaults would help with one use case for those operators, but there are other, stronger reasons to consider their addition to the language.

Calling Rust code from Python is made easy by PyO3. You can write a Rust library and rely on the combination of PyO3 and maturin, a supporting tool from the PyO3 ecosystem, to compile the Rust library and have it installed directly as a Python module. Among others, PyO3 can translate types between Python and Rust as well as make it easy to export Rust functions to Python through a set of macros.

Inside pretty well every folder that you’ve ever opened is a hidden file, one which even showing hidden files doesn’t reveal: .DS_Store. As with other under-the-hood features which Apple really doesn’t want you to know about, you’ll only come across it when it causes trouble.