Function get_hasher_instance_by_name

src/commoncode/hash.py:201–210

Return a hasher instance for a checksum algorithm ``name`` with a planned ``total_length`` of bytes to hash.

(name, total_length=0)

def get_hasher_instance_by_name(name, total_length=0):
    """
    Return a hasher instance for a checksum algorithm ``name`` with a planned ``total_length`` of
    bytes to hash.
    """
    try:
        hm = _hashmodules_by_name[name]
        return hm(total_length=total_length)
    except KeyError:
        raise ValueError(f"Unknown checksum algorithm: {name!r}")


def get_file_size(location):