Twitter から保存した画像を時系列順にリネームするスクリプト

twtimerename.py

import os
import os.path
import sys
import glob

def map(char):
    a = ord(char)
    if 48 <= a <= 57:
        return "~" + char
    elif char == "-":
        return "~~"
    elif char == "_":
        return "~~~"
    else:
        return char

def key(str):
    return "".join([map(c) for c in str])

def new_filepath(path, new, suffix="+"):
    root, ext = os.path.splitext(path)
    head, tail = os.path.split(root)
    path = os.path.join(head, new) + ext
    if os.path.lexists(path):
        return new_filepath(path, new + suffix, suffix)
    return path

ls = [f for f in glob.glob(os.path.join(sys.argv[1], "*")) if os.path.isfile(f)]
new = sorted(ls, key=key)
for i, f in enumerate(new):
    n = new_filepath(f, str(i))
    os.rename(f, n)