I like nushell, but I love xonsh. Xonsh is the bastard love child of Python and Bash.

it can be thought of as:

• try this statement in Python
• if there's an exception, try it in bash.

Now, that's not a very accurate description, because the reality is more nuanced, but it allows for things like:

for file in !(find | grep -i '[.]mp3^'):
    file = Path(file.strip())
    if file != Path('.') and file != file.with_suffix('.mp3'):
    mv @(file) @(file.with_suffix('.mp3'))

Now, there are things in there I wouldn't bother with normally - like, rather than using mv, I'd just use file.rename(), but the snippet shows a couple of the tools for interaction between xonsh and sh.

• !(foo) - if writing python, execute foo, and return lines
• @(foo) - if writing sh, substitute with the value of the foo variable.

But, either a line is treated in a pyhony way, or in a shelly way - and if a line is shelly, you can reference Python variables or expressions via @(), and if it's Pythony, you can execute shell code with !() or $(), returning the lines or the exact value, respectively.

Granted, I love python and like shell well enough, and chimeras are my jam, so go figure.