old_contents: import os
  import re
  import mimetypes
  import unicodedata
  from django.http import HttpResponse
  from django.core.urlresolvers import reverse
  from django.utils.six import PY2
  from django.utils.encoding import force_text
  from django.utils.safestring import mark_safe
  
  def get_slug(text):
      def slugify(value):
          """
          same than django slugify but allowing uppercase and underscore
          """
          value = force_text(value)
          value = unicodedata.normalize('NFKD', value).encode('ascii', 'ignore').decode('ascii')
          value = re.sub('[^\w\s\/_-]', '', value).strip()
          return mark_safe(re.sub('[-\s]+', '-', value))
  
      if PY2:
          from django.utils.encoding import force_unicode
          text = force_unicode(text)
      for sep in ('_', '/'):
          text = sep.join(slugify(t) for t in text.split(sep))
      return text.strip('/')
  
  
  def get_url(text, *args):
      # *args needed to receive prefix and suffix for markdowns wikilinks ext
      import ipdb; ipdb.set_trace()
      from waliki.settings import get_slug
      return reverse('waliki_detail', args=(get_slug(text),))
  
  
  def send_file(path, filename=None, content_type=None):
      # TODO : remove it and use django-sendfile instead
      if filename is None:
          filename = os.path.basename(path)
      if content_type is None:
          content_type, encoding = mimetypes.guess_type(filename)
      response = HttpResponse(content_type=content_type)
      response['Content-Disposition'] = 'attachment; filename=%s' % filename
      response.write(open(path, "rb").read())
      return response
  
new_contents: import os
  import re
  import mimetypes
  import unicodedata
  from django.http import HttpResponse
  from django.core.urlresolvers import reverse
  from django.utils.six import PY2
  from django.utils.encoding import force_text
  from django.utils.safestring import mark_safe
  
  def get_slug(text):
      def slugify(value):
          """
          same than django slugify but allowing uppercase and underscore
          """
          value = force_text(value)
          value = unicodedata.normalize('NFKD', value).encode('ascii', 'ignore').decode('ascii')
          value = re.sub('[^\w\s\/_-]', '', value).strip()
          return mark_safe(re.sub('[-\s]+', '-', value))
  
      if PY2:
          from django.utils.encoding import force_unicode
          text = force_unicode(text)
      for sep in ('_', '/'):
          text = sep.join(slugify(t) for t in text.split(sep))
      return text.strip('/')
  
  
  def get_url(text, *args):
      # *args needed to receive prefix and suffix for markdowns wikilinks ext
      from waliki.settings import get_slug
      return reverse('waliki_detail', args=(get_slug(text),))
  
  
  def send_file(path, filename=None, content_type=None):
      # TODO : remove it and use django-sendfile instead
      if filename is None:
          filename = os.path.basename(path)
      if content_type is None:
          content_type, encoding = mimetypes.guess_type(filename)
      response = HttpResponse(content_type=content_type)
      response['Content-Disposition'] = 'attachment; filename=%s' % filename
      response.write(open(path, "rb").read())
      return response
  
subject: remove pdb