text: import gzip
  
  from django.urls import get_resolver
  from django.urls import URLPattern, URLResolver
  
  
  def get_uri_template(urlname, args=None, prefix=""):
      '''
      Utility function to return an URI Template from a named URL in django
      Copied from django-digitalpaper.
  
      Restrictions:
      - Only supports named urls! i.e. url(... name="toto")
      - Only support one namespace level
      - Only returns the first URL possibility.
      - Supports multiple pattern possibilities (i.e., patterns with
        non-capturing parenthesis in them) by trying to find a pattern
        whose optional parameters match those you specified (a parameter
        is considered optional if it doesn't appear in every pattern possibility)
      '''
      def _convert(template, args=None):
          """URI template converter"""
          if not args:
              args = []
          paths = template % dict([p, "{%s}" % p] for p in args)
          return u'%s/%s' % (prefix, paths)
  
      resolver = get_resolver(None)
      parts = urlname.split(':')
      if len(parts) > 1 and parts[0] in resolver.namespace_dict:
          namespace = parts[0]
          urlname = parts[1]
          nprefix, resolver = resolver.namespace_dict[namespace]
          prefix = prefix + '/' + nprefix.rstrip('/')
      possibilities = resolver.reverse_dict.getlist(urlname)
      for tmp in possibilities:
          possibility, pattern = tmp[:2]
          if not args:
              # If not args are specified, we only consider the first pattern
              # django gives us
              result, params = possibility[0]
              return _convert(result, params)
          else:
              # If there are optionnal arguments passed, use them to try to find
              # the correct pattern.
              # First, we need to build a list with all the arguments
              seen_params = []
              for result, params in possibility:
                  seen_params.append(params)
              # Then build a set to find the common ones, and use it to build the
              # list of all the expected params
              common_params = reduce(lambda x, y: set(x) & set(y), seen_params)
              expected_params = sorted(common_params.union(args))
              # Then loop again over the pattern possibilities and return
              # the first one that strictly match expected params
              for result, params in possibility:
                  if sorted(params) == expected_params:
                      return _convert(result, params)
      return None
  
  
  class DecoratedURLPattern(URLPattern):
  
      def resolve(self, *args, **kwargs):
          result = URLPattern.resolve(self, *args, **kwargs)
          if result:
              for func in self._decorate_with:
                  result.func = func(result.func)
          return result
  
  
  def decorated_patterns(func, *urls):
      """
      Utility function to decorate a group of url in urls.py
  
      Taken from http://djangosnippets.org/snippets/532/ + comments
      See also http://friendpaste.com/6afByRiBB9CMwPft3a6lym
  
      Example:
      urlpatterns = [
          url(r'^language/(?P<lang_code>[a-z]+)$', views.MyView, name='name'),
      ] + decorated_patterns(login_required, url(r'^', include('cms.urls')),
      """
  
      def decorate(urls, func):
          for url in urls:
              if isinstance(url, URLPattern):
                  url.__class__ = DecoratedURLPattern
                  if not hasattr(url, "_decorate_with"):
                      setattr(url, "_decorate_with", [])
                  url._decorate_with.append(func)
              elif isinstance(url, URLResolver):
                  for pp in url.url_patterns:
                      if isinstance(pp, URLPattern):
                          pp.__class__ = DecoratedURLPattern
                          if not hasattr(pp, "_decorate_with"):
                              setattr(pp, "_decorate_with", [])
                          pp._decorate_with.append(func)
      if func:
          if not isinstance(func, (list, tuple)):
              func = [func]
          for f in func:
              decorate(urls, f)
  
      return urls
  
  
  def gzip_file(from_path, to_path):
      with open(from_path, 'rb') as f_in:
          with gzip.open(to_path, 'wb') as f_out:
              f_out.writelines(f_in)
  