def index():
        auth=urllib.parse.urlencode({'grant_type': 'authorization_code','code': 'code','client_id': 'b976ef0a5hfg9458b8de1136a95uj5ea5k6','client_secret': '0a286k3ra671438caa4a670ld478c7ae'}).encode("utf-8")
        header = {'Content-Type': 'application/x-www-form-urlencoded'}
        request = urllib.request.Request('https://oauth.yandex.ru/token', auth, header)
        try: 
            response = urllib.request.urlopen(request)
            print(response)
        except urllib.error.HTTPError as e:
            print(e.code)
            print(e.read())