binrev - バイナリファイルを逆順に標準出力してくれるpythonスクリプト

binrev

#!/bin/env python
from sys import stdin, stdout
import argparse

DESCRIPTION = "binary reverser v.1,0"
STDIN = "-"

parser = argparse.ArgumentParser(description=DESCRIPTION)
parser.add_argument('File', metavar='File', type=str, nargs="?",
    default=STDIN,
    help='file to print reversely')
args = parser.parse_args()

buf = bytes()
if args.File == STDIN:
    try:
        buf += bytes(stdin.buffer.read())
    except StopIteration:
        pass
else:
    with open(args.File, "rb") as f:
        buf = bytes(f.read())

stdout.buffer.write(buf[::-1])