RENOMMER DES FICHIERS EN MASSE

#!/usr/bin/python
#-*- coding: Utf-8 -*-
import os

class File:
	def __init__(self, chemin):
		self.chemin = chemin
		os.chdir(self.chemin)

	def renommer(self, ext=None, new_ext=None, start=None, prefixe=None):
		"""Renomme les fichier en masse dans un répertoire"""
		if ext != None:self.ext = ext
		if new_ext != None: self.new_ext = new_ext
		if prefixe != None:
			self.prefixe = prefixe
		else:
			self.prefixe = ''
		if start != None:
			self.start = start
		else: self.start = 0

		i = self.start
		for f in os.listdir(self.chemin)  :
			if os.path.isfile(f):
				if self.ext != None:
					if os.path.splitext(f)[1] in self.ext:
						a = open(f, "r+")
						self.name = str(self.prefixe)+str(i)
						self.extension = os.path.splitext(a.name)[1]
						if self.new_ext:
							self.extension = self.new_ext
						print a.name.ljust(20),

						self.new_name = str(self.name)+self.extension
						os.rename(a.name, self.new_name)
						print '-> ', self.new_name
						a.close()
						i += 1