【Python】スクレイピングで取得したデータフレームをfor文で連結したい

test_list=url_list[:2]

for url in tqdm(test_list):
  try:
    driver.get(url)
    html = driver.page_source.encode('utf-8')
    soup = BeautifulSoup(html, "html.parser")

    #差枚数以外のデータを取得
    data=pd.read_html(url)[0]
    data_test=data.drop([1,2,3,4,5,6,7,8,9,10,11,12,13], axis=0)

    #台番の取得
    no_list=[]
    no=soup.find("p",attrs={"class":"unit_no"})

    for i in no:
      no_list.append(i.string)

    data_test["unit_number"]=num_list

    #機種名のリスト
    name_list=[]
    name=soup.find_all("p",attrs={"class":"name"})

    for s in name:
      name_list.append(s.string)

    #機種名をDFに追加する
    data_test["unit_name"]=name_list

    #ホール名取得
    hall=soup.find_all("div",attrs={"class":"store-ttl"})
    hall_name_list=[]

    for u in hall:
      hall_name_list.append(u.string)

    data_test["hall_name"]=hall_name_list

    time.sleep(3)

    for d in len(data_test):
      data_test_all=pd.concat([d], axis=1, join_axes=[d.index])

  except Exception as e:
    print(e)

'int' object is not iterable