blendfile_path_remap.py 文件源码

def _uuid_from_file(fn, block_size=1 << 20):
    with open(fn, 'rb') as f:
        # first get the size
        f.seek(0, os.SEEK_END)
        size = f.tell()
        f.seek(0, os.SEEK_SET)
        # done!

        import hashlib
        sha1 = hashlib.new('sha512')
        while True:
            data = f.read(block_size)
            if not data:
                break
            sha1.update(data)
        return (hex(size)[2:] + sha1.hexdigest()).encode()