Rename the files in a directory as 0, 1, 2,... in sorted order

rename_seq.py

#! /usr/bin/env python3

import os
import sys

if len(sys.argv) < 2:
	print("Usage [exe name] [dir name]")
	exit(1)

dir = sys.argv[1]

for i, filename in enumerate(sorted(os.listdir(dir))):
	_, ext = os.path.splitext(filename)
	new_name = f"{dir}/{i}{ext}"
	os.rename(os.path.join(dir, filename), new_name)