Batch rename files in a folder (used for renaming shows in folder)

MoveAll.py

#!/usr/bin/python

import sys
from os import listdir, rename
from os.path import isfile, join, splitext
import re
import argparse

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parser = argparse.ArgumentParser(description='Batch rename files given a regular expression')

parser.add_argument('path', metavar='folder', type=str, help='the folder to be considered')

parser.add_argument('name', metavar='new_name', type=str, help='a pythonic representation of what the new name should be. Must include the percent d symbol in order to work')

parser.add_argument('rec', metavar='re_select', type=str, nargs='?', help='a RE to the part the program should look at')

parser.add_argument('--start', type=int, nargs=1, help='where should it start counting')
parser.add_argument('--stop', type=int, nargs=1, help='where should it stop counting')

parser.add_argument('--counter', dest='useCounter', action='store_true', help='use counter instead of the matched string')

args = parser.parse_args()

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def isFile(path, name):
	return isfile(join(path, name)) and name[0] != '.'

def lookup(item):
	global rec

	x = item[0]

	if rec is not None:
		x = re.search('(' + rec + ')', x)
		x = x.group(0) if x is not None else None

	if x is not None:
		item[1] = int(re.sub('[^\d+]', '', x))

	return x

def sorting(item):
	global max_length

	max_length = max(max_length, len(item[0]))
	return item[1]

def spacefill(string):
	global max_length
	return string + (' ' * (max_length - len(string)))

def out(n, start, stop):
	return (start is not None and n < start) or (stop is not None and n > stop)

def prompt(msg):
	answer = raw_input(msg + ' [yN]\n')
	return (answer == 'y' or answer == 'Y')

########################################################################################################################
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path = args.path
name = args.name
rec  = args.rec
max_length = -1
useCounter = args.useCounter

start = args.start[0] if args.start is not None else None
stop  = args.stop[0] if args.stop is not None else None

files = [ [f, ''] for f in listdir(path) if isFile(path, f) ]
files = filter(lambda f : lookup(f) is not None and not out(f[1], start, stop), files)
files.sort(key = sorting)

if len(files) == 0:
	sys.exit('No files selected')

counter = 1

for f in files:
	number = counter if useCounter else f[1]
	new = (name % number)

	print spacefill(f[0]), '\t\t=>\t\t', new

	counter += 1

print ''

if not prompt('Is this renaming correct?'):
	sys.exit(2)

if name.find('.') == -1:
	if not prompt('Do you want to proceed without specifying an extension?'):
		sys.exit(2)

counter = 1

for f in files:
	number = counter if useCounter else f[1]

	old = join(path, f[0])
	new = join(path, (name % number))

	rename(old, new)
	counter += 1

print 'Done!'

sys.exit(0)