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def download_file( self, url, desc=None):
    try:
        u = urllib2.urlopen(url)

        scheme, netloc, path, query, fragment = urlparse.urlsplit(url)
        filename = os.path.basename(path)
        if not filename:
            filename = 'downloaded.file'
        if desc:
            filename = os.path.join(desc, filename)
        print filename
        with open(filename, 'wb') as f:
            meta = u.info()
            meta_func = meta.getheaders if hasattr(meta, 'getheaders') else meta.get_all
            meta_length = meta_func("Content-Length")
            file_size = None
            if meta_length:
                file_size = int(meta_length[0])
            print "Downloading: {0} Bytes: {1}".format(url, file_size)

            file_size_dl = 0
            block_sz = 8192
            while True:
                buffer = u.read(block_sz)
                if not buffer:
                    break

                file_size_dl += len(buffer)
                f.write(buffer)

                status = "{0:16}".format(file_size_dl)
                if file_size:
                    status += "   [{0:6.2f}%]".format(file_size_dl * 100 / file_size)
                status += chr(13)
                print status
                self.label_infotext.config(text=status) #############################################################
            print

        return filename
    except:
        Error = True
        return