Shared via mypy Playground

main.py

import os
from pathlib import Path
def foo() -> list[str|os.PathLike[str]]:
    return ["a", "b", Path("/tmp")]

def main() -> None:

    cmd_line = foo() 
    file = cmd_line[0]
    args = cmd_line[1:]
    
    test : list[str| Path] = foo()
    os.execvp(
        file=file,
        args=args,
    )