def download(self, url):
        """
        Downloads the given URL and returns the file name.
        """
        def cleanup_url(url):
            tmp = url.rstrip('/')
            filename = tmp.split('/')[-1]
            if url.endswith('/'):
                display_url  = tmp + '/'
            else:
                display_url = url
            return filename, display_url

        prefix = 'django_%s_template_' % self.app_or_project
        tempdir = tempfile.mkdtemp(prefix=prefix, suffix='_download')
        self.paths_to_remove.append(tempdir)
        filename, display_url = cleanup_url(url)

        if self.verbosity >= 2:
            self.stdout.write("Downloading %s\n" % display_url)
        try:
            the_path, info = urllib.urlretrieve(url,
                                                path.join(tempdir, filename))
        except IOError, e:
            raise CommandError("couldn't download URL %s to %s: %s" %
                               (url, filename, e))

        used_name = the_path.split('/')[-1]

        # Trying to get better name from response headers
        content_disposition = info.get('content-disposition')
        if content_disposition:
            _, params = cgi.parse_header(content_disposition)
            guessed_filename = params.get('filename') or used_name
        else:
            guessed_filename = used_name

        # Falling back to content type guessing
        ext = self.splitext(guessed_filename)[1]
        content_type = info.get('content-type')
        if not ext and content_type:
            ext = mimetypes.guess_extension(content_type)
            if ext:
                guessed_filename += ext

        # Move the temporary file to a filename that has better
        # chances of being recognnized by the archive utils
        if used_name != guessed_filename:
            guessed_path = path.join(tempdir, guessed_filename)
            shutil.move(the_path, guessed_path)
            return guessed_path

        # Giving up
        return the_path
dataset/ETHPy150Open AppScale/appscale/AppServer/lib/django-1.4/django/core/management/templates.py/TemplateCommand.download/original