from pathlib import Path
from typing import List

def ensure_path(*paths: List[str]):
    for p in paths:
        abs_p = str(Path(p).expanduser().absolute())
        if abs_p not in $PATH:
            $PATH.insert(0, abs_p)

ensure_path("/usr/local/bin", "~/.dotfiles/bin", "~/.local/bin", "~/bin", "~/.emacs.d/bin")