kirisakow

kirisakow

from typing import Union
import hashlib
import os


def get_checksum(path_to_file: str, algorithm: Union[str, callable] = hashlib.sha256) -> str:
    """A function that computes checksum of a file using one of hashlib algorithms (default: SHA-256). It combines 
    a "modern" implementation with a pre-Python3.11 compatible alternative."""
    if not os.path.exists(path_to_file):
        raise FileNotFoundError(f"File {path_to_file!r} doesn't seem to exist")