I shouldn't have to install coreutils on my Mac to compute the sha sums of files, fuck you

fh.py

#!/usr/bin/env python3

import pathlib
import hashlib
import argparse


def compute(path: pathlib.Path, h_name: str = 'sha256') -> str:
    hasher = hashlib.new(h_name)
    with open(path, 'rb') as f:
        for byte_block in iter(lambda: f.read(4096), b''):
            hasher.update(byte_block)
    return hasher.hexdigest()


def main():

    parser = argparse.ArgumentParser(description="compute hashes for files")

    parser.add_argument("--hash", default="sha256")
    parser.add_argument("-v", "--version", action="version", version="%(prog)s 0.1")
    parser.add_argument(
        "files", type=pathlib.Path, nargs="+", help="compute hashes for these files"
    )

    args = parser.parse_args()

    for file in args.files:
        print(file, compute(file, args.hash))


if __name__ == "__main__":
    main()