Open filenames in the text editor for further changes

mrename.py

import sys
import os
import glob
import subprocess
import tempfile

EDITOR = 'c:/Program Files/Sublime Text 2/sublime_text.exe'

files = sys.argv[1:]

if not files:
    sys.exit('No files supplied')

# Run glob for each argument
files = reduce(lambda a, b: a + glob.glob(b), files, [])

# Create temp file and write filenames into it
with tempfile.NamedTemporaryFile(mode='w', delete=False) as fp:
    fp.write('\n'.join(files))

# Run EDITOR for temp file
subprocess.Popen([EDITOR, fp.name])

# Wait for user prompt
try:
    raw_input('Press ENTER when ready ')
except KeyboardInterrupt:
    sys.exit('')

# Read contents of the file
with open(fp.name) as fp:
    newfiles = fp.read().splitlines()
os.unlink(fp.name)

# Rename files
for old, new in zip(files, newfiles):
    os.rename(old, new)