files.py

# -*- coding: UTF-8 -*-
import os
import re

p = re.compile(r'[^0-9a-zA-Z\._]+')

#metodo para reemplazar los caracteres especiales en una cadena
def repl(match):
    chars = {u'á': u'a', u'Á':u'A', u'é':u'e', u'É':u'E', u'í': u'i', u'Í':u'I', u'ó':u'o', u'Ó':'O', u'ú':u'u', u'Ú':'U', u'ñ':u'n', u'ü':u'u'}
    a = ''
    for i in match.group():
        if i in chars:
            a = a + chars[i]
        else:
            a = a + '_'
    return a

def get_file_path(instance, filename):
    ext = filename.split('.')[-1]
    nombre = p.sub(repl, filename.replace('.'+filename.split('.')[-1], ''))
    filename = "%s.%s" % (nombre, ext)
    return os.path.join(instance.fileDir, filename)

def get_image_path(instance, filename):
    ext = filename.split('.')[-1]
    nombre = p.sub(repl, filename.replace('.'+filename.split('.')[-1], ''))
    filename = "%s/%s.%s" % (instance.galeria.id, nombre, ext)
    return os.path.join(instance.imgDir, filename)